EM-1 Countdown Demonstration with Cryogenic Loading Simulation

EM-1 Countdown Demonstration with Cryogenic Loading Simulation

Engineers with NASA and contractor Jacobs monitor their consoles during a countdown demonstration event of cryogenic propellant loading April 12, 2019, inside Firing Room 2 in the Launch Control Center at NASA’s Kennedy Space Center in Florida. The practice simulation involved loading of liquid hydrogen and liquid oxygen into the Space Launch System rocket’s core and upper stages to prepare for Exploration Mission-1 (EM-1). During the tanking exercise, the team worked through surprise issues in real-time. The practice countdown events are training opportunities coordinated by EM-1 Launch Director Charlie Blackwell-Thompson with Exploration Ground Systems.

Charlie Blackwell-Thompson, right, Exploration Mission-1 (EM-1) launch director, reviews procedures during a countdown demonstration event of cryogenic propellant loading April 12, 2019, inside Firing Room 2 in the Launch Control Center at NASA’s Kennedy Space Center in Florida. The practice simulation involved loading of liquid hydrogen and liquid oxygen into the Space Launch System rocket’s core and upper stages to prepare for EM-1. During the tanking exercise, the team worked through surprise issues in real-time. The practice countdown events are training opportunities coordinated by Blackwell-Thompson with Exploration Ground Systems.

Engineers with NASA and contractor Jacobs monitor their consoles during a countdown demonstration event of cryogenic propellant loading April 12, 2019, inside Firing Room 2 in the Launch Control Center at NASA’s Kennedy Space Center in Florida. The practice simulation involved loading of liquid hydrogen and liquid oxygen into the Space Launch System rocket’s core and upper stages to prepare for Exploration Mission-1 (EM-1). During the tanking exercise, the team worked through surprise issues in real-time. The practice countdown events are training opportunities coordinated by EM-1 Launch Director Charlie Blackwell-Thompson with Exploration Ground Systems.

Engineers with Exploration Ground Systems monitor their consoles during a countdown demonstration event of cryogenic propellant loading April 12, 2019, inside Firing Room 2 in the Launch Control Center at NASA’s Kennedy Space Center in Florida. The practice simulation involved loading of liquid hydrogen and liquid oxygen into the Space Launch System rocket’s core and upper stages to prepare for Exploration Mission-1 (EM-1). During the tanking exercise, the team worked through surprise issues in real-time. The practice countdown events are training opportunities coordinated by EM-1 Launch Director Charlie Blackwell-Thompson with Exploration Ground Systems.

Charlie Blackwell-Thompson, standing, Exploration Mission-1 (EM-1) launch director, leads a countdown demonstration event of cryogenic propellant loading April 12, 2019, inside Firing Room 2 in the Launch Control Center at NASA’s Kennedy Space Center in Florida. Seated is Roberta Wyrick, spacecraft test conductor with contractor Jacobs. The practice simulation involved loading of liquid hydrogen and liquid oxygen into the Space Launch System rocket’s core and upper stages to prepare for EM-1. During the tanking exercise, the team worked through surprise issues in real-time. The practice countdown events are training opportunities coordinated by Blackwell-Thompson with Exploration Ground Systems.

An engineer with NASA monitors his console during a countdown demonstration event of cryogenic propellant loading April 12, 2019, inside Firing Room 2 in the Launch Control Center at NASA’s Kennedy Space Center in Florida. The practice simulation involved loading of liquid hydrogen and liquid oxygen into the Space Launch System rocket’s core and upper stages to prepare for Exploration Mission-1 (EM-1). During the tanking exercise, the team worked through surprise issues in real-time. The practice countdown events are training opportunities coordinated by EM-1 Launch Director Charlie Blackwell-Thompson with Exploration Ground Systems.

Engineers with NASA and contractor Jacobs monitor their consoles during a countdown demonstration event of cryogenic propellant loading April 12, 2019, inside Firing Room 2 in the Launch Control Center at NASA’s Kennedy Space Center in Florida. The practice simulation involved loading of liquid hydrogen and liquid oxygen into the Space Launch System rocket’s core and upper stages to prepare for Exploration Mission-1 (EM-1). During the tanking exercise, the team worked through surprise issues in real-time. The practice countdown events are training opportunities coordinated by EM-1 Launch Director Charlie Blackwell-Thompson with Exploration Ground Systems.

Charlie Blackwell-Thompson, at right, Exploration Mission-1 (EM-1) launch director, leads a countdown demonstration event of cryogenic propellant loading April 12, 2019, inside Firing Room 2 in the Launch Control Center at NASA’s Kennedy Space Center in Florida. Seated next to her is Jessica Parsons, technical assitant to the launch director. The practice simulation involved loading of liquid hydrogen and liquid oxygen into the Space Launch System rocket’s core and upper stages to prepare for EM-1. During the tanking exercise, the team worked through surprise issues in real-time. The practice countdown events are training opportunities coordinated by Blackwell-Thompson with Exploration Ground Systems.

Engineers with NASA and contractor Jacobs monitor their consoles during a countdown demonstration event of cryogenic propellant loading April 12, 2019, inside Firing Room 2 in the Launch Control Center at NASA’s Kennedy Space Center in Florida. The practice simulation involved loading of liquid hydrogen and liquid oxygen into the Space Launch System rocket’s core and upper stages to prepare for Exploration Mission-1 (EM-1). During the tanking exercise, the team worked through surprise issues in real-time. The practice countdown events are training opportunities coordinated by EM-1 Launch Director Charlie Blackwell-Thompson with Exploration Ground Systems.

Charlie Blackwell-Thompson, Exploration Mission-1 (EM-1) launch director, leads a countdown demonstration event of cryogenic propellant loading April 12, 2019, inside Firing Room 2 in the Launch Control Center at NASA’s Kennedy Space Center in Florida. The practice simulation involved loading of liquid hydrogen and liquid oxygen into the Space Launch System rocket’s core and upper stages to prepare for EM-1. During the tanking exercise, the team worked through surprise issues in real-time. The practice countdown events are training opportunities coordinated by Blackwell-Thompson with Exploration Ground Systems.

Anthony Bharrat, NASA engine avionics engineer, monitors his console during a countdown demonstration event of cryogenic propellant loading April 12, 2019, inside Firing Room 2 in the Launch Control Center at NASA’s Kennedy Space Center in Florida. The practice simulation involved loading of liquid hydrogen and liquid oxygen into the Space Launch System rocket’s core and upper stages to prepare for Exploration Mission-1 (EM-1). During the tanking exercise, the team worked through surprise issues in real-time. The practice countdown events are training opportunities coordinated by EM-1 Launch Director Charlie Blackwell-Thompson with Exploration Ground Systems.

Engineers with NASA and contractor Jacobs monitor their consoles during a countdown demonstration event of cryogenic propellant loading April 12, 2019, inside Firing Room 2 in the Launch Control Center at NASA’s Kennedy Space Center in Florida. The practice simulation involved loading of liquid hydrogen and liquid oxygen into the Space Launch System rocket’s core and upper stages to prepare for Exploration Mission-1 (EM-1). During the tanking exercise, the team worked through surprise issues in real-time. The practice countdown events are training opportunities coordinated by EM-1 Launch Director Charlie Blackwell-Thompson with Exploration Ground Systems.

Charlie Blackwell-Thompson, far left, Exploration Mission-1 (EM-1) launch director, and engineers with NASA and Jacobs, participate in a countdown demonstration event of cryogenic propellant loading April 12, 2019, inside Firing Room 2 in the Launch Control Center at NASA’s Kennedy Space Center in Florida. The practice simulation involved loading of liquid hydrogen and liquid oxygen into the Space Launch System rocket’s core and upper stages to prepare for EM-1. During the tanking exercise, the team worked through surprise issues in real-time. The practice countdown events are training opportunities coordinated by Blackwell-Thompson with Exploration Ground Systems.

From left, Jeremy Graeber, chief NASA test director; Jessica Parsons, technical assistant to the launch director; and Charlie Blackwell-Thompson, Exploration Mission-1 (EM-1) launch director, participate in a countdown demonstration event of cryogenic propellant loading April 12, 2019, inside Firing Room 2 in the Launch Control Center at NASA’s Kennedy Space Center in Florida. The practice simulation involved loading of liquid hydrogen and liquid oxygen into the Space Launch System rocket’s core and upper stages to prepare for Exploration Mission-1 (EM-1). During the tanking exercise, the team worked through surprise issues in real-time. The practice countdown events are training opportunities coordinated by Blackwell-Thompson with Exploration Ground Systems.

From left, Jeremy Graeber, chief NASA test director; Jessica Parsons, technical assistant to the launch director; and Charlie Blackwell-Thompson, Exploration Mission-1 (EM-1) launch director, participate in a countdown demonstration event of cryogenic propellant loading April 12, 2019, inside Firing Room 2 in the Launch Control Center at NASA’s Kennedy Space Center in Florida. The practice simulation involved loading of liquid hydrogen and liquid oxygen into the Space Launch System rocket’s core and upper stages to prepare for Exploration Mission-1 (EM-1). During the tanking exercise, the team worked through surprise issues in real-time. The practice countdown events are training opportunities coordinated by Blackwell-Thompson with Exploration Ground Systems.

Tom Clark, standing, a manager with contractor ERC, works with Quentin Jones and Emily Hadley, both mechanical engineers for the liquid oxygen system, with ERC, during a countdown demonstration event of cryogenic propellant loading April 12, 2019, inside Firing Room 2 in the Launch Control Center at NASA’s Kennedy Space Center in Florida. The practice simulation involved loading of liquid hydrogen and liquid oxygen into the Space Launch System rocket’s core and upper stages to prepare for Exploration Mission-1 (EM-1). During the tanking exercise, the team worked through surprise issues in real-time. The practice countdown events are training opportunities coordinated by EM-1 Launch Director Charlie Blackwell-Thompson with Exploration Ground Systems.

Michael Guzman, an umbilical engineer, monitors his console in Firing Room 1 in the Launch Control Center at NASA’s Kennedy Space Center in Florida, during a terminal countdown demonstration for Exploration Mission 1, or EM-1, on Dec. 14, 2018. The launch will be the first integrated test of the Space Launch System rocket and Orion spacecraft that will eventually take astronauts beyond low-Earth orbit to destinations such as the Moon and Mars. The countdown demonstration was intended to validate the launch team's capability to perform an EM-1 countdown and respond to challenges put into the system for practice.

Mark Tripp, center, monitors his console in Firing Room 1 in the Launch Control Center at NASA’s Kennedy Space Center in Florida, during a terminal countdown demonstration for Exploration Mission 1, or EM-1, on Dec. 14, 2018. The launch will be the first integrated test of the Space Launch System rocket and Orion spacecraft that will eventually take astronauts beyond low-Earth orbit to destinations such as the Moon and Mars. The countdown demonstration was intended to validate the launch team's capability to perform an EM-1 countdown and respond to challenges put into the system for practice.

NASA Launch Director Charlie Blackwell-Thompson stands next to her console in Firing Room 1 at the Kennedy Space Center's Launch Control Center during a terminal countdown demonstration for Exploration Mission 1, or EM-1. The launch will be the first integrated test of the Space Launch System rocket and Orion spacecraft that will eventually take astronauts beyond low-Earth orbit to destinations such as the Moon and Mars. Taking place on Dec. 14, 2018, the countdown demonstration was intended to validate the launch team's capability to perform an EM-1 countdown and respond to challenges put into the system for practice.

NASA Launch Director Charlie Blackwell-Thompson makes notes at her console in Firing Room 1 at the Kennedy Space Center's Launch Control Center during a terminal countdown demonstration for Exploration Mission 1, or EM-1. The launch will be the first integrated test of the Space Launch System rocket and Orion spacecraft that will eventually take astronauts beyond low-Earth orbit to destinations such as the Moon and Mars. Taking place on Dec. 14, 2018, the countdown demonstration was intended to validate the launch team's capability to perform an EM-1 countdown and respond to challenges put into the system for practice.

NASA Launch Director Charlie Blackwell-Thompson looks out over Firing Room 1 in the Launch Control Center at NASA’s Kennedy Space Center in Florida during a terminal countdown demonstration for Exploration Mission 1, or EM-1, on Dec. 14, 2018. The launch will be the first integrated test of the Space Launch System rocket and Orion spacecraft that will eventually take astronauts beyond low-Earth orbit to destinations such as the Moon and Mars. The countdown demonstration was intended to validate the launch team's capability to perform an EM-1 countdown and respond to challenges put into the system for practice.

An overall view of Firing Room 1 at the Kennedy Space Center's Launch Control Center shows the launch team at work during a terminal countdown demonstration for Exploration Mission 1, or EM-1. The launch will be the first integrated test of the Space Launch System rocket and Orion spacecraft that will eventually take astronauts beyond low-Earth orbit to destinations such as the Moon and Mars. Taking place on Dec. 14, 2018, the countdown demonstration was intended to validate the launch team's capability to perform an EM-1 countdown and respond to challenges put into the system for practice.

NASA Launch Director Charlie Blackwell-Thompson stands next to her console in Firing Room 1 at the Kennedy Space Center's Launch Control Center during a terminal countdown demonstration for Exploration Mission 1, or EM-1. The launch will be the first integrated test of the Space Launch System rocket and Orion spacecraft that will eventually take astronauts beyond low-Earth orbit to destinations such as the Moon and Mars. Taking place on Dec. 14, 2018, the countdown demonstration was intended to validate the launch team's capability to perform an EM-1 countdown and respond to challenges put into the system for practice.

Special ground support equipment is used to position one of two side flame deflectors underneath the mobile launcher for Artemis I during a countdown demonstration test at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

Special ground support equipment is used to move the side flame deflectors into place during a countdown demonstration test using the mobile launcher for the Artemis I mission at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

Special ground support equipment is used to move the side flame deflectors into place during a countdown demonstration test using the mobile launcher for the Artemis I mission at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

A view of the mobile launcher for Artemis I with the two side flame deflectors positioned underneath during a countdown demonstration test at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. Also in view is the main flame deflector in the flame trench. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

Workers stand on the surface of Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. They are monitoring launch countdown timeline demonstration activities occurring on the mobile launcher for Artemis I. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

Special ground support equipment is used to position the two side flame deflectors underneath the mobile launcher for Artemis I during a countdown demonstration test at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

Special ground support equipment is used to position the two side flame deflectors underneath the mobile launcher for Artemis I during a countdown demonstration test at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

A close-up view of the mobile launcher for Artemis I with the two side flame deflectors positioned underneath during a countdown demonstration test at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. Also in view is the main flame deflector in the flame trench. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

A close-up view of the base of one of the side flame deflectors positioned underneath the mobile launcher for Artemis I during a countdown demonstration test at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

The base of the mobile launcher for Artemis I is in view on Launch Pad 3B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. Workers on scaffolding are preparing for a launch countdown demonstration. The nearly 400-foot-tall mobile launcher will remain at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

Technicians help move the side flame deflectors into place during a countdown demonstration test using the mobile launcher for the Artemis I mission at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

Special ground support equipment is used to move the side flame deflectors into place during a countdown demonstration test using the mobile launcher for the Artemis I mission at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

Special ground support equipment is used to move one of two side flame deflectors underneath the mobile launcher for Artemis I during a countdown demonstration test at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

A close-up view of the base of the mobile launcher for Artemis I with the two side flame deflectors positioned underneath during a countdown demonstration test at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

Special ground support equipment is used to move the side flame deflectors into place during a countdown demonstration test using the mobile launcher for the Artemis I mission at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

Special ground support equipment is used to move one of two side flame deflectors underneath the mobile launcher for Artemis I during a countdown demonstration test at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

Special ground support equipment is used to move the side flame deflectors into place during a countdown demonstration test using the mobile launcher for the Artemis I mission at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

Special ground support equipment is used to position one of two side flame deflectors underneath the mobile launcher for Artemis I during a countdown demonstration test at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

Special ground support equipment is used to move one of two side flame deflectors underneath the mobile launcher for Artemis I during a countdown demonstration test at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

An engineer with Exploration Ground Systems monitors countdown demonstration activities occurring on the mobile launcher for Artemis I on Oct. 23, 2020, at Launch Pad 39B at NASA’s Kennedy Space Center in Florida. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

Astronauts Thomas K. Mattingly, II., right, and Henry Hartsfield, Jr. pose for news photographers in front of the Space Shuttle vehicle during break in the countdown demonstration test (CDDT) for STS-4.

S69-56596 (28 Oct. 1969) --- A nighttime, ground-level view of Pad A, Launch Complex 39, Kennedy Space Center (KSC) showing the Apollo 12 (Spacecraft 108/Lunar Module 6/Saturn 507) space vehicle, during the terminal phase of a Countdown Demonstration Test (CDDT). The crew of the National Aeronautics and Space Administration's (NASA) second lunar landing mission will be astronauts Charles Conrad Jr., commander; Richard F. Gordon Jr., command module pilot; and Alan L. Bean, lunar module pilot. The Apollo 12 launch has been scheduled for 11:22 a.m. (EST) on Nov. 14, 1969.

S93-45003 (20 Sept 1993) --- Posing for a crew portrait, in front of the Space Shuttle Columbia at Launch Pad 39B, are the seven STS-58 astronauts. They are, left to right, David A. Wolf, mission specialist; Martin J. Fettman, payload specialist; William S. McArthur and Shannon W. Lucid, mission specialists; John E. Blaha, mission commander; Richard A. Searfoss, pilot; and Rhea Seddon, payload commander. The crew was in Florida for the Terminal Countdown Demonstration Test (CDDT) in preparation for next month's launch aboard Columbia. (Kennedy Space Center Photo ID: KSC-93-PC-1253)

Apollo XI Launch Vehicle AS-506 and Spacecraft 107, Launch Pad 39A for CDDT (Countdown Demonstration Test), includes MSS (Mobile Service Structure) pullback, KSC. 1. APOLLO XI - PRELAUNCH KENNEDY SPACE CENTER, FL

Apollo 11 crew member Michael Collins appears calm after suiting up activities for his participation in the countdown demonstration test aboard the Apollo 11 space craft along with astronauts Aldrin and Armstrong. The Apollo 11 mission, the first lunar landing mission, launched from the Kennedy Space Center (KSC) in Florida via the Marshall Space Flight Center (MSFC) developed Saturn V launch vehicle on July 16, 1969 and safely returned to Earth on July 24, 1969. Aboard the space craft were astronauts Neil A. Armstrong, commander; Michael Collins, Command Module (CM) pilot; and Edwin E. (Buzz) Aldrin Jr., Lunar Module (LM) pilot. The CM, “Columbia”, piloted by Collins, remained in a parking orbit around the Moon while the LM, “Eagle’’, carrying astronauts Armstrong and Aldrin, landed on the Moon. On July 20, 1969, Armstrong was the first human to ever stand on the lunar surface, followed by Aldrin. During 2½ hours of surface exploration, the crew collected 47 pounds of lunar surface material for analysis back on Earth. With the success of Apollo 11, the national objective to land men on the Moon and return them safely to Earth had been accomplished.

Apollo 8 astronaut William Anders, Lunar Module (LM) pilot, is suited up for the Apollo 8 mission countdown demonstration test. The first manned Apollo mission launched aboard the Saturn V and first manned Apollo craft to enter lunar orbit, the SA-503, Apollo 8 mission lift off occurred on December 21, 1968 and returned safely to Earth on December 27, 1968. Aboard were Anders and fellow astronauts James Lovell, Command Module (CM) pilot; and Frank Borman, commander. The mission achieved operational experience and tested the Apollo command module systems, including communications, tracking, and life-support, in cis-lunar space and lunar orbit, and allowed evaluation of crew performance on a lunar orbiting mission. The crew photographed the lunar surface, both far side and near side, obtaining information on topography and landmarks as well as other scientific information necessary for future Apollo landings. All systems operated within allowable parameters and all objectives of the mission were achieved.

S69-34333 (13 May 1969) --- The three Apollo 10 astronauts suit up for a Countdown Demonstration Test at the Kennedy Space Center during preparations for their scheduled lunar orbit mission. From front to rear, are Thomas P. Stafford, commander; John W. Young, command module pilot; and Eugene A. Cernan, lunar module pilot.

S69-34330 (13 May 1969) --- Astronaut Thomas P. Stafford, Apollo 9 commander, is suited up at the Kennedy Space Center for a Countdown Demonstration Test during preparations for the scheduled Apollo 10 lunar orbit mission. The other two crewmembers are astronauts John W. Young, command module pilot; and Eugene A. Cernan, lunar module pilot.

S69-25488 (23 Feb. 1969) --- Interior view of the White Room at Pad A, Launch Complex 39, Kennedy Space Center (KSC), during an Apollo 9 Countdown Demonstration Test (CDDT). Astronauts James A. McDivitt, commander; David R. Scott, command module pilot; and Russell L. Schweickart, lunar module pilot, were participating in a dress rehearsal in preparation for their scheduled 10-day Earth-orbital space mission.

S73-25696 (15 May 1973) --- An overall view of Pad B, Launch Complex 39, Kennedy Space Center, Florida, showing the Skylab 2/Saturn 1B space vehicle during a Countdown Demonstration Test (CDDT). This is the launch vehicle for the first manned Skylab mission. The vapor being emitted from the vehicle is the venting of cryogenic propellants. Photo credit: NASA

Apollo 11 crew members (left to right) Michael Collins, Edwin Aldrin (foreground), and Neil Armstrong, wearing space suits, leave the Apollo 11 space craft after participation in the countdown demonstration test for the upcoming mission. The Apollo 11 mission, the first lunar landing mission, launched from the Kennedy Space Center (KSC) in Florida via the Marshall Space Flight Center (MSFC) developed Saturn V launch vehicle on July 16, 1969 and safely returned to Earth on July 24, 1969. The CM, “Columbia”, piloted by Collins, remained in a parking orbit around the Moon while the LM, “Eagle’’, carrying astronauts Armstrong and Aldrin, landed on the Moon. On July 20, 1969, Armstrong was the first human to ever stand on the lunar surface, followed Aldrin. During 2½ hours of surface exploration, the crew collected 47 pounds of lunar surface material for analysis back on Earth. With the success of Apollo 11, the national objective to land men on the Moon and return them safely to Earth had been accomplished.

Seriousness exudes from launch official Miles Ross (left) of Kennedy Space Flight Center (KSC) and Major General E.F. O’Conner, director of program management of the Marshall Space Flight Center (MSFC), as they participate in the Apollo 11 countdown demonstration test. The Apollo 11 mission, the first lunar landing mission, launched from the KSC in Florida via the MSFC developed Saturn V launch vehicle on July 16, 1969 and safely returned to Earth on July 24, 1969. Aboard the space craft were astronauts Neil A. Armstrong, commander; Michael Collins, Command Module (CM) pilot; and Edwin E. (Buzz) Aldrin Jr., Lunar Module (LM) pilot. The CM, “Columbia”, piloted by Collins, remained in a parking orbit around the Moon while the LM, “Eagle’’, carrying astronauts Armstrong and Aldrin, landed on the Moon. On July 20, 1969, Armstrong was the first human to ever stand on the lunar surface, followed by Aldrin. During 2½ hours of surface exploration, the crew collected 47 pounds of lunar surface material for analysis back on Earth. With the success of Apollo 11, the national objective to land men on the Moon and return them safely to Earth had been accomplished.

Apollo 11 crew members (rear to front) Neil Armstrong, Edwin Aldrin, and Michael Collins, wearing space suits, ride the van to the launch pad to participate in the countdown demonstration test for the upcoming Apollo 11 mission. The Apollo 11 mission, the first lunar landing mission, launched from the Kennedy Space Center (KSC) in Florida via the Marshall Space Flight Center (MSFC) developed Saturn V launch vehicle on July 16, 1969 and safely returned to Earth on July 24, 1969. Aboard the space craft were astronauts Neil A. Armstrong, commander; Michael Collins, Command Module (CM) pilot; and Edwin E. (Buzz) Aldrin Jr., Lunar Module (LM) pilot. The CM, “Columbia”, piloted by Collins, remained in a parking orbit around the Moon while the LM, “Eagle’’, carrying astronauts Armstrong and Aldrin, landed on the Moon. On July 20, 1969, Armstrong was the first human to ever stand on the lunar surface, followed by Aldrin. During 2½ hours of surface exploration, the crew collected 47 pounds of lunar surface material for analysis back on Earth. With the success of Apollo 11, the national objective to land men on the Moon and return them safely to Earth had been accomplished.

Apollo 11 crew members (left to right) Neil Armstrong, Edwin Aldrin, and Michael Collins, wearing space suits, leave the elevator after descending from the top of the launch tower. The three had just completed participation in the countdown demonstration test for the upcoming Apollo 11 mission. The Apollo 11 mission, the first lunar landing mission, launched from the Kennedy Space Center (KSC) in Florida via the Marshall Space Flight Center (MSFC) developed Saturn V launch vehicle on July 16, 1969 and safely returned to Earth on July 24, 1969. Aboard the space craft were astronauts Neil A. Armstrong, commander; Michael Collins, Command Module (CM) pilot; and Edwin E. (Buzz) Aldrin Jr., Lunar Module (LM) pilot. The CM, “Columbia”, piloted by Collins, remained in a parking orbit around the Moon while the LM, “Eagle’’, carrying astronauts Armstrong and Aldrin, landed on the Moon. On July 20, 1969, Armstrong was the first human to ever stand on the lunar surface, followed by Aldrin. During 2½ hours of surface exploration, the crew collected 47 pounds of lunar surface material for analysis back on Earth. With the success of Apollo 11, the national objective to land men on the Moon and return them safely to Earth had been accomplished.

S89-41093 (9 Aug 1989) --- STS-28 Columbia, Orbiter Vehicle (OV) 102, mission specialist David C. Leestma relaxes in chair after donning launch and entry suit (LES) and launch and entry helmet (LEH). Technician in the background monitors LES systems. Leestma, along with fellow crewmembers, is participating in the terminal countdown demonstration test (TCDT) at the Kennedy Space Center (KSC) Operations and Checkout (O&C) Building. View provided by KSC with alternate number KSC-89PC-673.

S88-53244 (14 Nov 1988) --- The crewmembers for STS-27 leave the operations and checkout (O&C) building en route to a transfer van that will take them to Launch Pad 39B for their terminal countdown demonstration test. From the front to the rear are astronauts Robert L. Gibson, Guy S. Gardner, William M. Shepherd, Richard M. (Mike) Mullane and Jerry L. Ross.

S69-33853 (4 May 1969) --- Ground-level view of the Apollo 10 (Spacecraft 106/Lunar Module 4/Saturn 505) space vehicle on Pad B, Launch Complex 39, Kennedy Space Center, Florida. This photograph of the 363-feet tall Apollo/Saturn V stack was taken during Countdown Demonstration Test (CDDT) activity. The Apollo 10 crew will be astronauts Thomas P. Stafford, commander; John W. Young, command module pilot; and Eugene A. Cernan, lunar module pilot.

S82-32200 (29 May 1982) --- Members of the JSC astronaut corps, STS-4 vehicle integration test team (VITT) and other personnel pose for a photograph at the completion of a countdown demonstration test (CDDT) at Launch Pad 39A, Kennedy Space Center (KSC). The participants are, from the left, Wilbur J. Etbauer, engineer with the VITT; mission specialist-astronaut James D. van Hoften; Terry Stanford, engineer from JSC's flight operations directorate; mission specialist-astronaut Steven A. Hawley; astronaut Richard N. Richards; astronaut Michael J. Smith; Richard W. Nygren, head of the VITT; mission specialist-astronaut Kathryn D. Sullivan; astronaut Henry W. Hartsfield Jr.,STS-4 pilot; Mary Haynes, a co-op student participating with the VITT; astronaut Thomas K. Mattingly II, STS-4 commander; and astronaut Donald E. Williams. Photo credit: NASA

S69-25884 (23 Feb. 1969) --- Interior view of the white room atop Pad A, Launch Complex 39, Kennedy Space Center, during Apollo 9 Countdown Demonstration Test activity. Standing next to spacecraft hatch is astronaut James A. McDivitt, commander. Also, taking part in the training exercise were astronauts David R. Scott, command module pilot; and Russell L. Schweickart, lunar module pilot. The Apollo 9 mission will evaluate spacecraft lunar module systems performance during manned Earth-orbital flight. Apollo 9 will be the second manned Saturn V mission.

S88-53086 (17 Nov 1988) --- STS-27 Atlantis, Orbiter Vehicle (OV) 104, crewmembers participate in the terminal countdown demonstration test (TCDT) at the Kennedy Space Center (KSC). Standing in front of the M113 tracked rescue vehicle (armored personnel carrier (APC)) are left to right Mission Specialist (MS) William M. Shepherd, Pilot Guy S. Gardner, Commander Robert L. Gibson, MS Richard M. Mullane, and MS Jerry L. Ross. Crewmembers are wearing orange partial pressure or launch and entry suits (LES).

Lee B. James (left), manager of the Saturn Program at the Marshall Space flight Center (MSFC), talks with Isom Pigell in the firing room 1 of the Kennedy Space Center (KSC) control center during the countdown demonstration test for the Apollo 11 mission. The Apollo 11 mission, the first lunar landing mission, launched from the KSC in Florida via the MSFC developed Saturn V launch vehicle on July 16, 1969 and safely returned to Earth on July 24, 1969. Aboard the space craft were astronauts Neil A. Armstrong, commander; Michael Collins, Command Module (CM) pilot; and Edwin E. (Buzz) Aldrin Jr., Lunar Module (LM) pilot. The CM, “Columbia”, piloted by Collins, remained in a parking orbit around the Moon while the LM, “Eagle’’, carrying astronauts Armstrong and Aldrin, landed on the Moon. On July 20, 1969, Armstrong was the first human to ever stand on the lunar surface, followed by Aldrin. During 2½ hours of surface exploration, the crew collected 47 pounds of lunar surface material for analysis back on Earth. With the success of Apollo 11, the national objective to land men on the Moon and return them safely to Earth had been accomplished.

Lee B. James (left), manager of the Saturn Program at the Marshall Space flight Center (MSFC), talks with Isom Pigell in the firing room 1 of the Kennedy Space Center (KSC) control center during the countdown demonstration test for the Apollo 11 mission. At left is Dr. Hans C. Gruen of KSC. The Apollo 11 mission, the first lunar landing mission, launched from the KSC in Florida via the MSFC developed Saturn V launch vehicle on July 16, 1969 and safely returned to Earth on July 24, 1969. Aboard the space craft were astronauts Neil A. Armstrong, commander; Michael Collins, Command Module (CM) pilot; and Edwin E. (Buzz) Aldrin Jr., Lunar Module (LM) pilot. The CM, “Columbia”, piloted by Collins, remained in a parking orbit around the Moon while the LM, “Eagle’’, carrying astronauts Armstrong and Aldrin, landed on the Moon. On July 20, 1969, Armstrong was the first human to ever stand on the lunar surface, followed by Aldrin. During 2½ hours of surface exploration, the crew collected 47 pounds of lunar surface material for analysis back on Earth. With the success of Apollo 11, the national objective to land men on the Moon and return them safely to Earth had been accomplished.

Dr. Kurt Debus, director of the Kennedy Space Flight Center (KSC), participated in the countdown demonstration test for the Apollo 11 mission in firing room 1 of the KSC control center. The Apollo 11 mission, the first lunar landing mission, launched from KSC in Florida via the Marshall Space Flight Center (MSFC) developed Saturn V launch vehicle on July 16, 1969 and safely returned to Earth on July 24, 1969. Aboard the space craft were astronauts Neil A. Armstrong, commander; Michael Collins, Command Module (CM) pilot; and Edwin E. (Buzz) Aldrin Jr., Lunar Module (LM) pilot. The CM, “Columbia”, piloted by Collins, remained in a parking orbit around the Moon while the LM, “Eagle’’, carrying astronauts Armstrong and Aldrin, landed on the Moon. On July 20, 1969, Armstrong was the first human to ever stand on the lunar surface, followed by Aldrin. During 2½ hours of surface exploration, the crew collected 47 pounds of lunar surface material for analysis back on Earth. With the success of Apollo 11, the national objective to land men on the Moon and return them safely to Earth had been accomplished.

KENNEDY SPACE CENTER, FLA. - STS-79 Commander William F. Readdy arrives at KSC's Shuttle Landing Facility with five fellow astronauts, ready to participate in the Terminal Countdown Demonstration Test (TCDT). The TCDT is a dress rehearsal for launch for the flight crew and launch team. Over the next several days, the astronauts will take part in training exercises at the launch pad that will culminate in a simulated launch countdown. The Space Shuttle Atlantis is being prepared for liftoff on STS-79 around Sept. 12.

On Oct. 23, 2020, an engineer with Exploration Ground Systems (EGS) is at Launch Pad 39B at NASA’s Kennedy Space Center in Florida as a brilliant sunrise illuminates the sky. The mobile launcher for the Artemis I mission is at the pad to allow engineers with EGS and Jacobs to complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

The mobile launcher for the Artemis I mission is in view on the top of Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. The nearly 400-foot-tall mobile launcher is at the pad to allow engineers with Exploration Ground Systems and Jacobs to complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

The engine service platform has been lowered and removed from underneath the mobile launcher for Artemis I at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

The engine service platform has been lowered and removed from the mobile launcher for Artemis I at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. It is staged on the top of the pad. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

A view of the mobile launcher for the Artemis I mission on Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. The flame trench and flame deflector are in view below the mobile launcher. The nearly 400-foot-tall mobile launcher will remain at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

The engine service platform has been lowered and removed from the mobile launcher for Artemis I at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. It is staged on the top of the pad. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

Engineers with Exploration Ground Systems and Jacobs assist with lowering the engine service platform beneath the mobile launcher for Artemis I at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

The mobile launcher for the Artemis I mission is in view on the top of Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. The nearly 400-foot-tall mobile launcher is at the pad to allow engineers with Exploration Ground Systems and Jacobs to complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

The engine service platform has been lowered and removed from the mobile launcher for Artemis I at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. It is being moved from the pad. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

The engine service platform is moved into position beneath the mobile launcher for Artemis I at Launch Pad 39B on Oct. 23, 2020, at NASA’s Kennedy Space Center in Florida. The service platform allows access to the RS-25 engines on the Space Launch System core stage for routine work or inspections. The nearly 400-foot-tall mobile launcher will remain at the pad while engineers with Exploration Ground Systems and Jacobs will complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

A view of the mobile launcher for Artemis I on Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. The engine service platform has been lowered and removed from the mobile launcher and is in view on a flatbed carrier. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

The cab of a flatbed carrier is in view on the surface of Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. It will carry the engine service platform that was lowered and removed from the mobile launcher for Artemis I. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

The engine service platform is being raised beneath the mobile launcher for Artemis I at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

The engine service platform is moved into position beneath the mobile launcher for Artemis I at Launch Pad 39B on Oct. 23, 2020, at NASA’s Kennedy Space Center in Florida. The service platform allows access to the RS-25 engines on the Space Launch System core stage for routine work or inspections. The nearly 400-foot-tall mobile launcher will remain at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

A view of the mobile launcher for the Artemis I mission at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

The engine service platform is moved into position beneath the mobile launcher for Artemis I at Launch Pad 39B on Oct. 23, 2020, at NASA’s Kennedy Space Center in Florida. The service platform allows access to the RS-25 engines on the Space Launch System core stage for routine work or inspections. The nearly 400-foot-tall mobile launcher will remain at the pad while engineers with Exploration Ground Systems and Jacobs will complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

A view of Launch Complex 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. The mobile launcher for Artemis I is at the pad. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

The engine service platform is moved into position beneath the mobile launcher for Artemis I at Launch Pad 39B on Oct. 23, 2020, at NASA’s Kennedy Space Center in Florida. The service platform allows access to the RS-25 engines on the Space Launch System core stage for routine work or inspections. The nearly 400-foot-tall mobile launcher will remain at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

A flatbed carrier is in view on the surface of Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. It is carrying the engine service platform that was lowered and removed from the mobile launcher for Artemis I. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

The engine service platform has been lowered and removed from the mobile launcher for Artemis I at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. The platform is in view on a flatbed truck. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

Engineers with Exploration Ground Systems and Jacobs assist with raising the engine service platform beneath the mobile launcher for Artemis I at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

A view of the mobile launcher for the Artemis I mission at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

A view of the base of the mobile launcher for Artemis I and the flame trench below as the engine service platform is being raised into position below the mobile launcher at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

The mobile launcher for the Artemis I mission is in view on the top of Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. The nearly 400-foot-tall mobile launcher is at the pad to allow engineers with Exploration Ground Systems and Jacobs to complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

The engine service platform has been lowered and removed from the mobile launcher for Artemis I at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. The platform is in view on a flatbed truck. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

Workers assists with raising the engine service platform beneath the mobile launcher for Artemis I at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

STS-82 Terminal Countdown Demonstration Test (TCDT

STS-82 crew arrival for Terminal Countdown Demonstration Test (TCDT

STS-82 crew arrival for Terminal Countdown Demonstration Test (TCDT

STS-82 crew arrival for Terminal Countdown Demonstration Test (TCDT

STS-83 crew M113 driver training during Terminal Countdown Demonstration Test (TCDT