
Teams at NASA’s Stennis Space Center performed a wet dress rehearsal exercise with the new Space Launch System core stage Dec. 20, 2020. The test – the seventh in an eight-test Green Run series – involved rehearsal of a countdown to hot fire of the stage’s engines, including the loading of 733,000 pounds of liquid hydrogen and liquid oxygen propellants. This image shows liquid hydrogen being safely vented and burned as it naturally warms and boils off.

Members of the Artemis I launch team participate in a wet dress rehearsal for the Artemis I mission on April 14, 2022, inside the Launch Control Center at NASA’s Kennedy Space Center in Florida. The wet dress rehearsal is the final major test before launch and allows the team to run through all countdown operations prior to liftoff. The first in an increasingly complex series of missions, Artemis I will test NASA’s Space Launch System rocket and Orion spacecraft as an integrated system prior to crewed flights to the Moon.

Members of the Artemis I launch team participate in a wet dress rehearsal for the Artemis I mission on April 14, 2022, inside the Launch Control Center at NASA’s Kennedy Space Center in Florida. The wet dress rehearsal is the final major test before launch and allows the team to run through all countdown operations prior to liftoff. The first in an increasingly complex series of missions, Artemis I will test NASA’s Space Launch System rocket and Orion spacecraft as an integrated system prior to crewed flights to the Moon.

Members of the Artemis I launch team participate in a wet dress rehearsal for the Artemis I mission on April 14, 2022, inside the Launch Control Center at NASA’s Kennedy Space Center in Florida. The wet dress rehearsal is the final major test before launch and allows the team to run through all countdown operations prior to liftoff. The first in an increasingly complex series of missions, Artemis I will test NASA’s Space Launch System rocket and Orion spacecraft as an integrated system prior to crewed flights to the Moon.

Members of the Artemis I launch team participate in a wet dress rehearsal for the Artemis I mission on April 14, 2022, inside the Launch Control Center at NASA’s Kennedy Space Center in Florida. The wet dress rehearsal is the final major test before launch and allows the team to run through all countdown operations prior to liftoff. The first in an increasingly complex series of missions, Artemis I will test NASA’s Space Launch System rocket and Orion spacecraft as an integrated system prior to crewed flights to the Moon.

Artemis I Launch Director Charlie Blackwell-Thompson, left, and Assistant Launch Director Jeremy Graeber participate in a wet dress rehearsal for the Artemis I mission on April 14, 2022, inside Firing Room 1 in the Launch Control Center at NASA’s Kennedy Space Center in Florida. The wet dress rehearsal is the final major test before launch and allows the launch team to run through all countdown operations prior to liftoff. The first in an increasingly complex series of missions, Artemis I will test NASA’s Space Launch System rocket and Orion spacecraft as an integrated system prior to crewed flights to the Moon.

Wes Mosedale, technical assistant to the Artemis I launch director, participates in a wet dress rehearsal for the Artemis I mission on April 14, 2022, inside Firing Room 1 in the Launch Control Center at NASA’s Kennedy Space Center in Florida. The wet dress rehearsal is the final major test before launch and allows the launch team to run through all countdown operations prior to liftoff. The first in an increasingly complex series of missions, Artemis I will test NASA’s Space Launch System rocket and Orion spacecraft as an integrated system prior to crewed flights to the Moon.

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen atop a mobile launcher at Launch Complex 39B, Monday, April 4, 2022, as the Artemis I launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen atop a mobile launcher at Launch Complex 39B, Monday, April 4, 2022, as the Artemis I launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen atop a mobile launcher at Launch Complex 39B, Sunday, April 3, 2022, as the Artemis I launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen at sunrise atop a mobile launcher at Launch Complex 39B, Monday, April 4, 2022, as the Artemis I launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

A dragon fly is seen as NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard atop a mobile launcher at Launch Complex 39B undergoes the wet dress rehearsal test, Monday, April 4, 2022, NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen atop a mobile launcher at Launch Complex 39B, Monday, April 4, 2022, as the Artemis I launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen atop a mobile launcher at Launch Complex 39B, Monday, April 4, 2022, as the Artemis I launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen at sunrise atop a mobile launcher at Launch Complex 39B, Monday, April 4, 2022, as the Artemis I launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

In this 30-second exposure, NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen atop a mobile launcher at Launch Complex 39B, Friday, April 8, 2022, as the Artemis I launch team prepares for the next attempt of the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen at sunrise atop a mobile launcher at Launch Complex 39B, Monday, April 4, 2022, as the Artemis I launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen at sunrise atop a mobile launcher at Launch Complex 39B, Monday, April 4, 2022, as the Artemis I launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen at sunrise atop a mobile launcher at Launch Complex 39B, Monday, April 4, 2022, as the Artemis I launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen atop a mobile launcher at Launch Complex 39B, Monday, April 4, 2022, as the Artemis I launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen atop a mobile launcher at Launch Complex 39B in this view of the Vehicle Assembly Building and the Rocco A. Petrone Launch Control Center, Monday, April 4, 2022, as the Artemis I launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

The Artemis I Space Launch System (SLS) and Orion spacecraft are in view atop the mobile launcher on Launch Pad 39B at NASA’s Kennedy Space Center in Florida on April 14, 2022, during a prelaunch test called the Wet Dress Rehearsal. Artemis I will be the first integrated test of the SLS and Orion spacecraft. In later missions, NASA will land the first woman and the first person of color on the surface of the Moon, paving the way for a long-term lunar presence and serving as a steppingstone on the way to Mars.

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen atop a mobile launcher at Launch Complex 39B, Monday, April 4, 2022, as the Artemis I launch teams load more than 700,000 gallons of cryogenic propellants including liquid hydrogen and liquid oxygen during the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen atop a mobile launcher at Launch Complex 39B, Monday, April 4, 2022, as the Artemis I launch teams load more than 700,000 gallons of cryogenic propellants including liquid hydrogen and liquid oxygen during the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen at sunrise atop a mobile launcher at Launch Complex 39B, Sunday, April 3, 2022, as the Artemis I launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen at sunrise atop a mobile launcher at Launch Complex 39B, Sunday, April 3, 2022, as the Artemis I launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen at sunrise atop a mobile launcher at Launch Complex 39B, Monday, April 4, 2022, as the Artemis I launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen atop a mobile launcher at Launch Complex 39B, Sunday, April 3, 2022, as the Artemis I launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen atop a mobile launcher at Launch Complex 39B, Sunday, April 3, 2022, as the Artemis I launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen atop a mobile launcher at Launch Complex 39B in this view of Rocco A. Petrone Launch Control Center, Monday, April 4, 2022, as the Artemis I launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen atop a mobile launcher at Launch Complex 39B, Saturday, April 2, 2022, as the Artemis I launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen atop a mobile launcher at Launch Complex 39B, Saturday, April 2, 2022, as the Artemis I launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen atop a mobile launcher at Launch Complex 39B, Sunday, April 3, 2022, as the Artemis I launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen at sunrise atop a mobile launcher at Launch Complex 39B, Sunday, April 3, 2022, as the Artemis I launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen atop a mobile launcher at Launch Complex 39B, Saturday, April 2, 2022, as the Artemis I launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen atop a mobile launcher at Launch Complex 39B illuminated by spotlights, Saturday, April 2, 2022, as the Artemis I launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen atop a mobile launcher at Launch Complex 39B, Sunday, April 3, 2022, as the Artemis I launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen atop a mobile launcher at Launch Complex 39B illuminated by spotlights, Saturday, April 2, 2022, as the Artemis I launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen atop a mobile launcher at Launch Complex 39Bin this view of the Vehicle Assembly Building and the Rocco A. Petrone Launch Control Center, Sunday, April 3, 2022, as the Artemis I launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen at sunrise atop a mobile launcher at Launch Complex 39B, Sunday, April 3, 2022, as the Artemis I launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen atop a mobile launcher at Launch Complex 39B illuminated by spotlights, Saturday, April 2, 2022, as the Artemis I launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen atop a mobile launcher at Launch Complex 39B, Saturday, April 2, 2022, as the Artemis I launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen at sunrise atop a mobile launcher at Launch Complex 39B, Sunday, April 3, 2022, as the Artemis I launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen atop a mobile launcher at Launch Complex 39B, Saturday, April 2, 2022, as the Artemis I launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen atop a mobile launcher at Launch Complex 39B, Monday, April 4, 2022, as the Artemis I launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen atop a mobile launcher at Launch Complex 39B, Monday, April 4, 2022, as the Artemis I launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen atop a mobile launcher at Launch Complex 39B, Sunday, April 3, 2022, as the Artemis I launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen at sunrise atop a mobile launcher at Launch Complex 39B, Sunday, April 3, 2022, as the Artemis I launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen atop a mobile launcher at Launch Complex 39B, Saturday, April 2, 2022, as the Artemis I launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen atop a mobile launcher at Launch Complex 39B illuminated by spotlights, Saturday, April 2, 2022, as the Artemis I launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen atop a mobile launcher at Launch Complex 39B illuminated by spotlights, Saturday, April 2, 2022, as the Artemis I launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen atop a mobile launcher at Launch Complex 39B, Saturday, April 2, 2022, as the Artemis I launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis I flight test, the wet dress rehearsal will run the Artemis I launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Photo Credit: (NASA/Joel Kowsky)

Operators at the B-2 Test Stand at Stennis Space Center near Bay St. Louis, Mississippi, conducted a wet dress rehearsal for the hot fire test of the core stage of NASA’s Space Launch System on Dec. 21, 2020. In this image, water flows from the B-2 Test Stand flame deflector, just as it will during an actual hot fire test. The hot fire will conclude a series of eight Green Run tests of all core stage systems before it is transported to Kennedy Space Center for launch on the Artemis I mission.

Operators at the B-2 Test Stand at Stennis Space Center near Bay St. Louis, Mississippi, conducted a wet dress rehearsal for the hot fire test of the core stage of NASA’s Space Launch System on Dec. 21, 2020. In this image, water flows from the B-2 Test Stand flame deflector, just as it will during an actual hot fire test. The hot fire will conclude a series of eight Green Run tests of all core stage systems before it is transported to Kennedy Space Center for launch on the Artemis I mission.

A United Launch Alliance Atlas V rocket, topped by the Boeing CST-100 Starliner spacecraft, stand on Space Launch Complex 41 at Florida's Cape Canaveral Air Force Station on Dec. 4, 2019. The vehicle was in place on the launch pad for Boeing's wet dress rehearsal ahead of the upcoming Orbital Flight Test, an uncrewed mission to the International Space Station for NASA's Commercial Crew Program.

A United Launch Alliance Atlas V rocket, topped by the Boeing CST-100 Starliner spacecraft, stand on Space Launch Complex 41 at Florida's Cape Canaveral Air Force Station on Dec. 4, 2019. The vehicle was in place on the launch pad for Boeing's wet dress rehearsal ahead of the upcoming Orbital Flight Test, an uncrewed mission to the International Space Station for NASA's Commercial Crew Program.

A United Launch Alliance Atlas V rocket, topped by the Boeing CST-100 Starliner spacecraft, stand on Space Launch Complex 41 at Florida's Cape Canaveral Air Force Station on Dec. 4, 2019. The vehicle was in place on the launch pad for Boeing's wet dress rehearsal ahead of the upcoming Orbital Flight Test, an uncrewed mission to the International Space Station for NASA's Commercial Crew Program.

A wet dress rehearsal is underway for Rocket Lab’s Electron rocket at Launch Complex 1 in Mahia, New Zealand on April 28, 2023. NASA’s Time-Resolved Observations of Precipitation structure and storm Intensity with a Constellation of Smallsats (TROPICS) CubeSats are secured in the payload fairing atop the rocket. TROPICS is scheduled to launch from Launch Complex 1, Pad B. TROPICS will provide data on temperature, precipitation, water vapor, and clouds by measuring microwave frequencies, providing insight into storm formation and intensification.

A wet dress rehearsal is underway for Rocket Lab’s Electron rocket at Launch Complex 1 in Mahia, New Zealand on April 28, 2023. NASA’s Time-Resolved Observations of Precipitation structure and storm Intensity with a Constellation of Smallsats (TROPICS) CubeSats are secured in the payload fairing atop the rocket. TROPICS is scheduled to launch from Launch Complex 1, Pad B. TROPICS will provide data on temperature, precipitation, water vapor, and clouds by measuring microwave frequencies, providing insight into storm formation and intensification.

A wet dress rehearsal is underway for Rocket Lab’s Electron rocket at Launch Complex 1 in Mahia, New Zealand on April 28, 2023. NASA’s Time-Resolved Observations of Precipitation structure and storm Intensity with a Constellation of Smallsats (TROPICS) CubeSats are secured in the payload fairing atop the rocket. TROPICS is scheduled to launch from Launch Complex 1, Pad B. TROPICS will provide data on temperature, precipitation, water vapor, and clouds by measuring microwave frequencies, providing insight into storm formation and intensification.

Barges are docked at the B-2 Test Stand at Stennis Space Center near Bay St. Louis, Mississippi, during preparations for a wet dress rehearsal exercise with the core stage of NASA’s Space Launch System rocket. During the wet dress rehearsal, operators will fully load the core stage’s propellant tanks for the first time and countdown just shy of engine ignition. The wet dress rehearsal is the seventh in a series of eight Green Run tests of the core stage’s integrated systems prior to its transport to Kennedy Space Center and launch on the Artemis I mission.

Barges are docked at the B-2 Test Stand at Stennis Space Center near Bay St. Louis, Mississippi, during preparations for a wet dress rehearsal exercise with the core stage of NASA’s Space Launch System rocket. During the wet dress rehearsal, operators will fully load the core stage’s propellant tanks for the first time and countdown just shy of engine ignition. The wet dress rehearsal is the seventh in a series of eight Green Run tests of the core stage’s integrated systems prior to its transport to Kennedy Space Center and launch on the Artemis I mission.

Barges are docked at the B-2 Test Stand at Stennis Space Center near Bay St. Louis, Mississippi, during preparations for a wet dress rehearsal exercise with the core stage of NASA’s Space Launch System rocket. During the wet dress rehearsal, operators will fully load the core stage’s propellant tanks for the first time and countdown just shy of engine ignition. The wet dress rehearsal is the seventh in a series of eight Green Run tests of the core stage’s integrated systems prior to its transport to Kennedy Space Center and launch on the Artemis I mission.

On March 17, 2022, the Artemis I Moon rocket rolled out of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida and made its way to launch pad 39B in preparation for the wet dress rehearsal – one of the final tests needed before the Artemis I launch.

The booster and Centaur upper stage of a United Launch Alliance Atlas V vent gaseous propellant during a “wet dress rehearsal” test at Space Launch Complex 41 on Florida’s Cape Canaveral Air Force Station. The rocket will boost NASA’s Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer, or OSIRIS-REx spacecraft. Targeted for liftoff Sept. 8, 2016, OSIRIS-REx will be the first U.S. mission to sample an asteroid, retrieve at least two ounces of surface material and return it to Earth for study. The asteroid, Bennu, may hold clues to the origin of the solar system and the source of water and organic molecules found on Earth.

Crawler-transporter 2 is in view just outside the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on March 14, 2022. Soon the crawler will be driven inside to transport the Space Launch System and Orion spacecraft stack atop the mobile launcher for a trip along the crawlerway to Launch Complex 39B for a wet dress rehearsal. The Kennedy ground systems team is working to remove equipment and scaffolding away from the rocket and will continue retracting the platforms until the entire rocket is revealed ahead of the wet dress rehearsal test, which is scheduled to occur approximately two weeks after it arrives to 39B. Artemis I is the first in a series of increasingly complex missions that will enable human exploration to the Moon and Mars.

Operators at the B-2 Test Stand at Stennis Space Center near Bay St. Louis, Mississippi, conducted a wet dress rehearsal for the hot fire test of the core stage of NASA’s Space Launch System on Dec. 21, 2020. In this image, liquid oxygen can be seen venting near the top of the installed core stage. Following the wet dress rehearsal, operators will conduct a full hot fire test of the core stage and its four RS-25 engines. The hot fire will conclude a series of eight Green Run tests of all core stage systems before it is transported to Kennedy Space Center for launch on the Artemis I mission.

Operators at the B-2 Test Stand at Stennis Space Center near Bay St. Louis, Mississippi, conducted a wet dress rehearsal for the hot fire test of the core stage of NASA’s Space Launch System on Dec. 21, 2020. In this image, liquid oxygen can be seen venting from B-2 Test Stand piping. Following the wet dress rehearsal, operators will conduct a full hot fire test of the core stage and its four RS-25 engines. The hot fire will conclude a series of eight Green Run tests of all core stage systems before it is transported to Kennedy Space Center for launch on the Artemis I mission.

Operators at the B-2 Test Stand at Stennis Space Center near Bay St. Louis, Mississippi, conducted a wet dress rehearsal for the hot fire test of the core stage of NASA’s Space Launch System on Dec. 21, 2020. In this image, liquid oxygen can be seen venting near the top of the installed core stage. Following the wet dress rehearsal, operators will conduct a full hot fire test of the core stage and its four RS-25 engines. The hot fire will conclude a series of eight Green Run tests of all core stage systems before it is transported to Kennedy Space Center for launch on the Artemis I mission.

Operators at the B-2 Test Stand at Stennis Space Center near Bay St. Louis, Mississippi, conducted a wet dress rehearsal for the hot fire test of the core stage of NASA’s Space Launch System on Dec. 21, 2020. In this image, liquid oxygen can be seen venting near the top of the installed core stage. Following the wet dress rehearsal, operators will conduct a full hot fire test of the core stage and its four RS-25 engines. The hot fire will conclude a series of eight Green Run tests of all core stage systems before it is transported to Kennedy Space Center for launch on the Artemis I mission.

Teams at NASA’s Stennis Space Center performed a wet dress rehearsal exercise with the new Space Launch System core stage Dec. 20, 2020. The test – the seventh in an eight-test Green Run series – involved rehearsal of a countdown to hot fire of the stage’s engines, including the loading of 733,000 pounds of liquid hydrogen and liquid oxygen propellants. This image shows liquid oxygen as it naturally boils off and is vented from the four RS-25 engines that will be fired during the final core stage test.

Barges are docked at the B-2 Test Stand at Stennis Space Center on Dec. 4, 2020, in preparation for upcoming Green Run test activities. Teams at the center have been performing Green Run tests of NASA’s Space Launch System core stage and its integrated systems throughout 2020. In mid-December, teams performed the seventh test of the Green Run series – a wet dress rehearsal of a countdown to hot fire. It marked the first time the stage tanks had been loaded with liquid oxygen and liquid hydrogen propellants supplied by the docked barges.

Boeing’s CST-100 Starliner spacecraft is poised atop a fueled United Launch Alliance (ULA) Atlas V rocket at Cape Canaveral Air Force Station’s (CCAFS) Space Launch Complex 41 in Florida for the program’s first-ever Integrated Day of Launch Test on Dec. 6, 2019. The rocket’s booster and Centaur upper stage have been filled with propellants for this full run-through of the launch countdown. The rehearsal is practice for Boeing’s upcoming uncrewed Orbital Flight Test to the International Space Station for NASA’s Commercial Crew Program.

The sunrise casts a warm glow around the Artemis I Space Launch System (SLS) and Orion spacecraft at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on March 21, 2022. The SLS and Orion atop the mobile launcher were transported to the pad on crawler-transporter 2 for a prelaunch test called a wet dress rehearsal. Artemis I will be the first integrated test of the SLS and Orion spacecraft. In later missions, NASA will land the first woman and the first person of color on the surface of the Moon, paving the way for a long-term lunar presence and serving as a steppingstone on the way to Mars.

Driven by engineers and technicians, the crawler-transporter 2, slides under the Artemis I Space Launch System (SLS) with the Orion spacecraft atop on the mobile launcher inside the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on March 15, 2022. The crawler will carry the Artemis I stack to Launch Complex 39B for a wet dress rehearsal test ahead of launch. Artemis I will be the first integrated test of the SLS and Orion spacecraft. In later missions, NASA will land the first woman and the first person of color on the surface of the Moon, paving the way for a long-term lunar presence and serving as a steppingstone on the way to Mars.

Engineers and technicians drive the crawler-transporter 2 along the crawlerway toward the Vehicle Assembly Building (VAB) at NASA’s Kennedy Space Center in Florida on March 11, 2022. The crawler will go inside the VAB, where it will slide under the Artemis I Space Launch System with the Orion spacecraft atop on the mobile launcher and carry it to Launch Complex 39B for a wet dress rehearsal test ahead of the Artemis I launch. Artemis I will be the first integrated test of the SLS and Orion spacecraft. In later missions, NASA will land the first woman and the first person of color on the surface of the Moon, paving the way for a long-term lunar presence and serving as a steppingstone on the way to Mars.

In this aerial view, the crawler-transporter 2, driven by engineers and technicians, approaches the Vehicle Assembly Building (VAB) at NASA’s Kennedy Space Center in Florida on March 11, 2022. The crawler will go inside the VAB, where it will slide under the Artemis I Space Launch System with the Orion spacecraft atop on the mobile launcher and carry it to Launch Complex 39B for a wet dress rehearsal test ahead of the Artemis I launch. Artemis I will be the first integrated test of the SLS and Orion spacecraft. In later missions, NASA will land the first woman and the first person of color on the surface of the Moon, paving the way for a long-term lunar presence and serving as a steppingstone on the way to Mars.

A view of the Artemis I Space Launch System (SLS) and Orion spacecraft just before sunrise at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on March 23, 2022. The SLS and Orion atop the mobile launcher were transported to the pad on crawler-transporter 2 for a prelaunch test called a wet dress rehearsal. Artemis I will be the first integrated test of the SLS and Orion spacecraft. In later missions, NASA will land the first woman and the first person of color on the surface of the Moon, paving the way for a long-term lunar presence and serving as a steppingstone on the way to Mars

In this panoramic view in High Bay 3 of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, all of the work platforms that surround the Artemis I Space Launch System (SLS) and Orion spacecraft are fully retracted on March 16, 2022. The Artemis I stack atop the mobile launcher will roll out to Launch Complex 39B atop the crawler-transporter 2 for a wet dress rehearsal ahead of launch. Artemis I will be the first integrated test of the SLS and Orion spacecraft. In later missions, NASA will land the first woman the first person of color on the surface of the Moon, paving the way for a long-term lunar presence and serving as a steppingstone on the way to Mars.

The sunrise casts a golden glow on the Artemis I Space Launch System (SLS) and Orion spacecraft at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on March 23, 2022. The SLS and Orion atop the mobile launcher were transported to the pad on crawler-transporter 2 for a prelaunch test called a wet dress rehearsal. Artemis I will be the first integrated test of the SLS and Orion spacecraft. In later missions, NASA will land the first woman and the first person of color on the surface of the Moon, paving the way for a long-term lunar presence and serving as a steppingstone on the way to Mars.

In this view looking up inside the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on March 11, 2022, the work platforms are being retracted from around the Artemis I Space Launch System rocket and Orion spacecraft in preparation to roll out to launch pad 39B. The Kennedy ground systems team is working to remove equipment and scaffolding away from the rocket and will continue retracting the platforms until the entire rocket is revealed ahead of the wet dress rehearsal test, which is scheduled to occur approximately two weeks after it arrives to 39B. Artemis I is the first in a series of increasingly complex missions that will enable human exploration to the Moon and Mars.

Engineers and technicians drive the crawler-transporter 2 under the Artemis I Space Launch System (SLS) with the Orion spacecraft atop on the mobile launcher inside the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on March 15, 2022. The crawler will carry the Artemis I stack to Launch Complex 39B for a wet dress rehearsal test ahead of launch. Artemis I will be the first integrated test of the SLS and Orion spacecraft. In later missions, NASA will land the first woman and the first person of color on the surface of the Moon, paving the way for a long-term lunar presence and serving as a steppingstone on the way to Mars.

A sunrise view of the Artemis I Space Launch System (SLS) and Orion spacecraft at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on March 21, 2022. The SLS and Orion atop the mobile launcher were transported to the pad on crawler-transporter 2 for a prelaunch test called a wet dress rehearsal. Artemis I will be the first integrated test of the SLS and Orion spacecraft. In later missions, NASA will land the first woman and the first person of color on the surface of the Moon, paving the way for a long-term lunar presence and serving as a steppingstone on the way to Mars.

The Moon serves as a background for the Artemis I Space Launch System (SLS) and Orion spacecraft at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on March 21, 2022. The SLS and Orion atop the mobile launcher were transported to the pad on crawler-transporter 2 for a prelaunch test called a wet dress rehearsal. Artemis I will be the first integrated test of the SLS and Orion spacecraft. In later missions, NASA will land the first woman and the first person of color on the surface of the Moon, paving the way for a long-term lunar presence and serving as a steppingstone on the way to Mars.

In this view looking up in High Bay 3 of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, all of the work platforms that surround the Artemis I Space Launch System (SLS) and Orion spacecraft are fully retracted on March 16, 2022. The Artemis I stack atop the mobile launcher will roll out to Launch Complex 39B atop the crawler-transporter 2 for a wet dress rehearsal ahead of launch. Artemis I will be the first integrated test of the SLS and Orion spacecraft. In later missions, NASA will land the first woman the first person of color on the surface of the Moon, paving the way for a long-term lunar presence and serving as a steppingstone on the way to Mars.

Engineers and technicians drive the crawler-transporter 2 along the crawlerway toward the Vehicle Assembly Building (VAB) at NASA’s Kennedy Space Center in Florida on March 11, 2022. The crawler will go inside the VAB, where it will slide under the Artemis I Space Launch System with the Orion spacecraft atop on the mobile launcher and carry it to Launch Complex 39B for a wet dress rehearsal test ahead of the Artemis I launch. Artemis I will be the first integrated test of the SLS and Orion spacecraft. In later missions, NASA will land the first woman and the first person of color on the surface of the Moon, paving the way for a long-term lunar presence and serving as a steppingstone on the way to Mars.

Driven by engineers and technicians, the crawler-transporter 2 slides under the Artemis I Space Launch System (SLS) with the Orion spacecraft atop on the mobile launcher inside the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on March 15, 2022. The crawler will carry the Artemis I stack to Launch Complex 39B for a wet dress rehearsal test ahead of launch. Artemis I will be the first integrated test of the SLS and Orion spacecraft. In later missions, NASA will land the first woman and the first person of color on the surface of the Moon, paving the way for a long-term lunar presence and serving as a steppingstone on the way to Mars.

In this view looking down inside the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on March 11, 2022, the work platforms are being retracted from around the Artemis I Space Launch System rocket and Orion spacecraft in preparation to roll out to launch pad 39B. The Kennedy ground systems team is working to remove equipment and scaffolding away from the rocket and will continue retracting the platforms until the entire rocket is revealed ahead of the wet dress rehearsal test, which is scheduled to occur approximately two weeks after it arrives to 39B. Artemis I is the first in a series of increasingly complex missions that will enable human exploration to the Moon and Mars.

In this view looking up in High Bay 3 of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, all of the work platforms that surround the Artemis I Space Launch System (SLS) and Orion spacecraft are fully retracted on March 16, 2022. The Artemis I stack atop the mobile launcher will roll out to Launch Complex 39B atop the crawler-transporter 2 for a wet dress rehearsal ahead of launch. Artemis I will be the first integrated test of the SLS and Orion spacecraft. In later missions, NASA will land the first woman the first person of color on the surface of the Moon, paving the way for a long-term lunar presence and serving as a steppingstone on the way to Mars.

In this view looking up inside the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on March 11, 2022, the work platforms are being retracted from around the Artemis I Space Launch System rocket and Orion spacecraft in preparation to roll out to launch pad 39B. The Kennedy ground systems team is working to remove equipment and scaffolding away from the rocket and will continue retracting the platforms until the entire rocket is revealed ahead of the wet dress rehearsal test, which is scheduled to occur approximately two weeks after it arrives to 39B. Artemis I is the first in a series of increasingly complex missions that will enable human exploration to the Moon and Mars.

In this view looking down in High Bay 3 of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, the Artemis I Space Launch System (SLS) and Orion spacecraft can be seen without any work platforms surrounding them on March 17, 2022. The Artemis I stack atop the mobile launcher will roll out to Launch Complex 39B atop the crawler-transporter 2 for a wet dress rehearsal ahead of launch. Artemis I will be the first integrated test of the SLS and Orion spacecraft. In later missions, NASA will land the first woman the first person of color on the surface of the Moon, paving the way for a long-term lunar presence and serving as a steppingstone on the way to Mars.

Engineers and technicians drive the crawler-transporter 2 along the crawlerway toward the Vehicle Assembly Building (VAB) at NASA’s Kennedy Space Center in Florida on March 11, 2022. The crawler will go inside the VAB, where it will slide under the Artemis I Space Launch System with the Orion spacecraft atop on the mobile launcher and carry it to Launch Complex 39B for a wet dress rehearsal test ahead of the Artemis I launch. Artemis I will be the first integrated test of the SLS and Orion spacecraft. In later missions, NASA will land the first woman and the first person of color on the surface of the Moon, paving the way for a long-term lunar presence and serving as a steppingstone on the way to Mars.

In this view looking down in High Bay 3 of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, all of the work platforms that surround the Artemis I Space Launch System (SLS) and Orion spacecraft are fully retracted on March 16, 2022. The Artemis I stack atop the mobile launcher will roll out to Launch Complex 39B atop the crawler-transporter 2 for a wet dress rehearsal ahead of launch. Artemis I will be the first integrated test of the SLS and Orion spacecraft. In later missions, NASA will land the first woman the first person of color on the surface of the Moon, paving the way for a long-term lunar presence and serving as a steppingstone on the way to Mars.

A view of the Artemis I Space Launch System (SLS) and Orion spacecraft on Launch Pad 39B during sunrise at NASA’s Kennedy Space Center in Florida on March 24, 2022. The SLS and Orion atop the mobile launcher were transported to the pad on crawler-transporter 2 for a prelaunch test called a wet dress rehearsal. Artemis I will be the first integrated test of the SLS and Orion spacecraft. In later missions, NASA will land the first woman and the first person of color on the surface of the Moon, paving the way for a long-term lunar presence and serving as a steppingstone on the way to Mars.

In this view looking down in High Bay 3 of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, all of the work platforms that surround the Artemis I Space Launch System (SLS) and Orion spacecraft are fully retracted on March 16, 2022. The Artemis I stack atop the mobile launcher will roll out to Launch Complex 39B atop the crawler-transporter 2 for a wet dress rehearsal ahead of launch. Artemis I will be the first integrated test of the SLS and Orion spacecraft. In later missions, NASA will land the first woman the first person of color on the surface of the Moon, paving the way for a long-term lunar presence and serving as a steppingstone on the way to Mars.

The crawler-transporter 2, driven by engineers and technicians, approaches the Vehicle Assembly Building (VAB) at NASA’s Kennedy Space Center in Florida on March 11, 2022. The crawler will go inside the VAB, where it will slide under the Artemis I Space Launch System with the Orion spacecraft atop on the mobile launcher and carry it to Launch Complex 39B for a wet dress rehearsal test ahead of the Artemis I launch. Artemis I will be the first integrated test of the SLS and Orion spacecraft. In later missions, NASA will land the first woman and the first person of color on the surface of the Moon, paving the way for a long-term lunar presence and serving as a steppingstone on the way to Mars

Inside High Bay 3 of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, application of the NASA worm logo is complete on the first of two solid rocket boosters for the Artemis I Space Launch System on March 14, 2022. The SLS and Orion spacecraft are stacked in the high bay and ready for rollout to Launch Complex 39B for a wet dress rehearsal. Artemis I will be the first integrated test of the SLS and Orion spacecraft. In later missions, NASA will land the first woman and the first person of color on the surface of the Moon, paving the way for a long-term lunar presence and serving as a steppingstone on the way to Mars.

The sunrise casts a golden glow on the Artemis I Space Launch System (SLS) and Orion spacecraft at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on March 23, 2022. The SLS and Orion atop the mobile launcher were transported to the pad on crawler-transporter 2 for a prelaunch test called a wet dress rehearsal. Artemis I will be the first integrated test of the SLS and Orion spacecraft. In later missions, NASA will land the first woman and the first person of color on the surface of the Moon, paving the way for a long-term lunar presence and serving as a steppingstone on the way to Mars.

NASA’s Moon rocket is on the move at the agency’s Kennedy Space Center in Florida, rolling out of the Vehicle Assembly Building for a 4.2-mile journey to Launch Complex 39B on March 17, 2022. Carried atop the crawler-transporter 2, the Space Launch System (SLS) rocket and Orion spacecraft are venturing to the pad for a wet dress rehearsal ahead of the uncrewed Artemis I launch. The first in an increasingly complex set of missions, Artemis I will test SLS and Orion as an integrated system prior to crewed flights to the Moon. Through Artemis, NASA will land the first woman and the first person of color on the lunar surface, paving the way for a long-term lunar presence and serving as a steppingstone on the way to Mars.

In this view looking down in High Bay 3 of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, the Artemis I Space Launch System (SLS) and Orion spacecraft can be seen without any work platforms surrounding them on March 17, 2022. The Artemis I stack atop the mobile launcher will roll out to Launch Complex 39B atop the crawler-transporter 2 for a wet dress rehearsal ahead of launch. Artemis I will be the first integrated test of the SLS and Orion spacecraft. In later missions, NASA will land the first woman the first person of color on the surface of the Moon, paving the way for a long-term lunar presence and serving as a steppingstone on the way to Mars.