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)

NASA astronauts Bob Behnken, left, and Doug Hurley, wearing SpaceX spacesuits, walk through the Crew Access Arm connecting the launch tower to the SpaceX Crew Dragon spacecraft during a dress rehearsal at NASA’s Kennedy Space Center in Florida on Jan. 17, 2020. A SpaceX Falcon 9 rocket and Crew Dragon spacecraft stand on the launch pad at Launch Complex 39A ahead of the company’s uncrewed In-Flight Abort Test. The flight test will demonstrate the spacecraft’s escape capabilities in preparation for crewed flights to the International Space Station as part of the agency’s Commercial Crew Program. Behnken and Hurley are slated to fly on the company’s first crewed mission, Demo-2.

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.

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.

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)

NASA astronaut Doug Hurley, wearing a SpaceX spacesuit, looks through his helmet’s closed visor in the Astronaut Crew Quarters at Kennedy Space Center in Florida on Jan. 17, 2020, during a dress rehearsal ahead of the company’s uncrewed In-Flight Abort Test. A SpaceX Falcon 9 rocket and Crew Dragon spacecraft will lift off from Launch Complex 39A on the flight test, which will demonstrate the spacecraft’s escape capabilities in preparation for crewed flights to the International Space Station as part of the agency’s Commercial Crew Program. Hurley and NASA astronaut Bob Behnken are slated to fly on the company’s first crewed mission, Demo-2.

NASA astronaut Bob Behnken gives a thumbs-up as he dons a SpaceX spacesuit in the Astronaut Crew Quarters at Kennedy Space Center in Florida on Jan. 17, 2020, during a dress rehearsal ahead of the company’s uncrewed In-Flight Abort Test. A SpaceX Falcon 9 rocket and Crew Dragon spacecraft will lift off from Launch Complex 39A on the flight test, which will demonstrate the spacecraft’s escape capabilities in preparation for crewed flights to the International Space Station as part of the agency’s Commercial Crew Program. Behnken and NASA astronaut Doug Hurley are slated to fly on the company’s first crewed mission, Demo-2.

NASA astronauts Doug Hurley, foreground, and Bob Behnken don SpaceX spacesuits in the Astronaut Crew Quarters at Kennedy Space Center in Florida on Jan. 17, 2020, during a dress rehearsal ahead of the company’s uncrewed In-Flight Abort Test. A SpaceX Falcon 9 rocket and Crew Dragon spacecraft will lift off from Launch Complex 39A on the flight test, which will demonstrate the spacecraft’s escape capabilities in preparation for crewed flights to the International Space Station as part of the agency’s Commercial Crew Program. Hurley and Behnken are slated to fly on the company’s first crewed mission, Demo-2.

NASA astronaut Doug Hurley wears a SpaceX spacesuit in the Astronaut Crew Quarters at Kennedy Space Center in Florida on Jan. 17, 2020, during a dress rehearsal ahead of the company’s uncrewed In-Flight Abort Test. A SpaceX Falcon 9 rocket and Crew Dragon spacecraft will lift off from Launch Complex 39A on the flight test, which will demonstrate the spacecraft’s escape capabilities in preparation for crewed flights to the International Space Station as part of the agency’s Commercial Crew Program. Hurley and NASA astronaut Bob Behnken are slated to fly on the company’s first crewed mission, Demo-2.

NASA astronaut Doug Hurley dons a SpaceX spacesuit in the Astronaut Crew Quarters at Kennedy Space Center in Florida on Jan. 17, 2020, during a dress rehearsal ahead of the company’s uncrewed In-Flight Abort Test. A SpaceX Falcon 9 rocket and Crew Dragon spacecraft will lift off from Launch Complex 39A on the flight test, which will demonstrate the spacecraft’s escape capabilities in preparation for crewed flights to the International Space Station as part of the agency’s Commercial Crew Program. Hurley and NASA astronaut Bob Behnken are slated to fly on the company’s first crewed mission, Demo-2.

NASA astronaut Doug Hurley dons a SpaceX spacesuit in the Astronaut Crew Quarters at Kennedy Space Center in Florida on Jan. 17, 2020, during a dress rehearsal ahead of the company’s uncrewed In-Flight Abort Test. A SpaceX Falcon 9 rocket and Crew Dragon spacecraft will lift off from Launch Complex 39A on the flight test, which will demonstrate the spacecraft’s escape capabilities in preparation for crewed flights to the International Space Station as part of the agency’s Commercial Crew Program. Hurley and NASA astronaut Bob Behnken are slated to fly on the company’s first crewed mission, Demo-2.

NASA astronauts Bob Behnken, foreground, and Doug Hurley don SpaceX spacesuits in the Astronaut Crew Quarters at Kennedy Space Center in Florida on Jan. 17, 2020, during a dress rehearsal ahead of the company’s uncrewed In-Flight Abort Test. A SpaceX Falcon 9 rocket and Crew Dragon spacecraft will lift off from Launch Complex 39A on the flight test, which will demonstrate the spacecraft’s escape capabilities in preparation for crewed flights to the International Space Station as part of the agency’s Commercial Crew Program. Behnken and Hurley are slated to fly on the company’s first crewed mission, Demo-2.

From left to right, NASA astronauts Bob Behnken, Kjell Lindgren and Doug Hurley pause for a photo in the Astronaut Crew Quarters at Kennedy Space Center in Florida on Jan. 17, 2020, during a dress rehearsal ahead of the SpaceX uncrewed In-Flight Abort Test. Behken and Hurley are wearing SpaceX spacesuits. A SpaceX Falcon 9 rocket and Crew Dragon spacecraft will lift off from Launch Complex 39A on the flight test, which will demonstrate the spacecraft’s escape capabilities in preparation for crewed flights to the International Space Station as part of the agency’s Commercial Crew Program. Behnken and Hurley are slated to fly on the company’s first crewed mission, Demo-2.

NASA astronaut Bob Behnken wears a SpaceX spacesuit in the Astronaut Crew Quarters at Kennedy Space Center in Florida on Jan. 17, 2020, during a dress rehearsal ahead of the company’s uncrewed In-Flight Abort Test. A SpaceX Falcon 9 rocket and Crew Dragon spacecraft will lift off from Launch Complex 39A on the flight test, which will demonstrate the spacecraft’s escape capabilities in preparation for crewed flights to the International Space Station as part of the agency’s Commercial Crew Program. Behnken and NASA astronaut Doug Hurley are slated to fly on the company’s first crewed mission, Demo-2.

NASA astronauts Doug Hurley, foreground, and Bob Behnken don SpaceX spacesuits in the Astronaut Crew Quarters at Kennedy Space Center in Florida on Jan. 17, 2020, during a dress rehearsal ahead of the company’s uncrewed In-Flight Abort Test. A SpaceX Falcon 9 rocket and Crew Dragon spacecraft will lift off from Launch Complex 39A on the flight test, which will demonstrate the spacecraft’s escape capabilities in preparation for crewed flights to the International Space Station as part of the agency’s Commercial Crew Program. Hurley and Behnken are slated to fly on the company’s first crewed mission, Demo-2.

NASA astronaut Bob Behnken wears a SpaceX spacesuit in the Astronaut Crew Quarters at Kennedy Space Center in Florida on Jan. 17, 2020, during a dress rehearsal ahead of the company’s uncrewed In-Flight Abort Test. A SpaceX Falcon 9 rocket and Crew Dragon spacecraft will lift off from Launch Complex 39A on the flight test, which will demonstrate the spacecraft’s escape capabilities in preparation for crewed flights to the International Space Station as part of the agency’s Commercial Crew Program. Behnken and NASA astronaut Doug Hurley are slated to fly on the company’s first crewed mission, Demo-2.

NASA astronauts Doug Hurley, foreground, and Bob Behnken don SpaceX spacesuits in the Astronaut Crew Quarters at Kennedy Space Center in Florida on Jan. 17, 2020, during a dress rehearsal ahead of the company’s uncrewed In-Flight Abort Test. A SpaceX Falcon 9 rocket and Crew Dragon spacecraft will lift off from Launch Complex 39A on the flight test, which will demonstrate the spacecraft’s escape capabilities in preparation for crewed flights to the International Space Station as part of the agency’s Commercial Crew Program. Hurley and Behnken are slated to fly on the company’s first crewed mission, Demo-2.

NASA astronauts Doug Hurley, foreground, and Bob Behnken don SpaceX spacesuits in the Astronaut Crew Quarters at Kennedy Space Center in Florida on Jan. 17, 2020, during a dress rehearsal ahead of the company’s uncrewed In-Flight Abort Test. A SpaceX Falcon 9 rocket and Crew Dragon spacecraft will lift off from Launch Complex 39A on the flight test, which will demonstrate the spacecraft’s escape capabilities in preparation for crewed flights to the International Space Station as part of the agency’s Commercial Crew Program. Hurley and Behnken are slated to fly on the company’s first crewed mission, Demo-2.

NASA astronauts Bob Behnken, right, wearing a SpaceX spacesuit, and a suit technician shake hands in the Astronaut Crew Quarters at Kennedy Space Center in Florida on Jan. 17, 2020, during a dress rehearsal ahead of the company’s uncrewed In-Flight Abort Test. A SpaceX Falcon 9 rocket and Crew Dragon spacecraft will lift off from Launch Complex 39A on the flight test, which will demonstrate the spacecraft’s escape capabilities in preparation for crewed flights to the International Space Station as part of the agency’s Commercial Crew Program. Behnken and NASA astronaut Doug Hurley are slated to fly on the company’s first crewed mission, Demo-2.

NASA astronauts Bob Behnken, left, and Doug Hurley, wearing SpaceX spacesuits, walk out of the Neil A. Armstrong Operations and Checkout Building at Kennedy Space Center in Florida on Jan. 17, 2020, during a dress rehearsal ahead of the SpaceX uncrewed In-Flight Abort Test. A SpaceX Falcon 9 rocket and Crew Dragon spacecraft will lift off from Launch Complex 39A on the flight test, which will demonstrate the spacecraft’s escape capabilities in preparation for crewed flights to the International Space Station as part of the agency’s Commercial Crew Program. Behnken and Hurley are slated to fly on the company’s first crewed mission, Demo-2.

NASA astronauts Bob Behnken, left, and Doug Hurley shake hands after suiting up in SpaceX spacesuits in the Astronaut Crew Quarters at Kennedy Space Center in Florida on Jan. 17, 2020, during a dress rehearsal ahead of the company’s uncrewed In-Flight Abort Test. A SpaceX Falcon 9 rocket and Crew Dragon spacecraft will lift off from Launch Complex 39A on the flight test, which will demonstrate the spacecraft’s escape capabilities in preparation for crewed flights to the International Space Station as part of the agency’s Commercial Crew Program. Behnken and Hurley are slated to fly on the company’s first crewed mission, Demo-2.

NASA astronauts Doug Hurley, left, and Bob Behnken, wearing SpaceX spacesuits, wave after walking out of the Neil A. Armstrong Operations and Checkout Building at Kennedy Space Center in Florida on Jan. 17, 2020, during a dress rehearsal ahead of the SpaceX uncrewed In-Flight Abort Test. A SpaceX Falcon 9 rocket and Crew Dragon spacecraft will lift off from Launch Complex 39A on the flight test, which will demonstrate the spacecraft’s escape capabilities in preparation for crewed flights to the International Space Station as part of the agency’s Commercial Crew Program. Behnken and Hurley are slated to fly on the company’s first crewed mission, Demo-2.

NASA astronaut Doug Hurley dons a SpaceX spacesuit in the Astronaut Crew Quarters at Kennedy Space Center in Florida on Jan. 17, 2020, during a dress rehearsal ahead of the company’s uncrewed In-Flight Abort Test. A SpaceX Falcon 9 rocket and Crew Dragon spacecraft will lift off from Launch Complex 39A on the flight test, which will demonstrate the spacecraft’s escape capabilities in preparation for crewed flights to the International Space Station as part of the agency’s Commercial Crew Program. Hurley and NASA astronaut Bob Behnken are slated to fly on the company’s first crewed mission, Demo-2.

NASA astronaut Doug Hurley wears a SpaceX spacesuit in the Astronaut Crew Quarters at Kennedy Space Center in Florida on Jan. 17, 2020, during a dress rehearsal ahead of the company’s uncrewed In-Flight Abort Test. A SpaceX Falcon 9 rocket and Crew Dragon spacecraft will lift off from Launch Complex 39A on the flight test, which will demonstrate the spacecraft’s escape capabilities in preparation for crewed flights to the International Space Station as part of the agency’s Commercial Crew Program. Hurley and NASA astronaut Bob Behnken are slated to fly on the company’s first crewed mission, Demo-2.

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.

NASA’s SpaceX Crew-3 astronauts participate in a countdown dress rehearsal at the agency’s Kennedy Space Center in Florida on Oct. 28, 2021, to prepare for the upcoming Crew-3 launch. NASA astronaut Kayla Barron, dressed in her SpaceX spacesuit, is inside the crew access arm leading to the company’s Crew Dragon spacecraft during the rehearsal. The four-person crew will launch aboard the Crew Dragon atop the Falcon 9 on Oct. 31 to the International Space Station. Launch is targeted for 2:21 a.m. EDT from Pad 39A. Crew-3 is the third crew rotation flight to the space station for NASA’s Commercial Crew Program, and the first flight of a new Crew Dragon spacecraft.

NASA astronauts cheer as fellow astronauts Bob Benhken and Doug Hurley walk out of the Neil A. Armstrong Operations and Checkout Building at Kennedy Space Center in Florida on Jan. 17, 2020, during a dress rehearsal ahead of the SpaceX uncrewed In-Flight Abort Test. From left to right are Mike Hopkins, Joe Acaba, Raja Chari, Victor Glover, Kjell Lindgren and Glen Davis with the Vehicle Integration Test Office at Kennedy. A SpaceX Falcon 9 rocket and Crew Dragon spacecraft will lift off from Launch Complex 39A on the flight test, which will demonstrate the spacecraft’s escape capabilities in preparation for crewed flights to the International Space Station as part of the agency’s Commercial Crew Program. Behnken and Hurley are slated to fly on the company’s first crewed mission, Demo-2.

NASA astronauts cheer as fellow astronauts Bob Benhken and Doug Hurley walk out of the Neil A. Armstrong Operations and Checkout Building at Kennedy Space Center in Florida on Jan. 17, 2020, during a dress rehearsal ahead of the SpaceX uncrewed In-Flight Abort Test. From left to right are Mike Hopkins, Raja Chari, Victor Glover and Kjell Lindgren. A SpaceX Falcon 9 rocket and Crew Dragon spacecraft will lift off from Launch Complex 39A on the flight test, which will demonstrate the spacecraft’s escape capabilities in preparation for crewed flights to the International Space Station as part of the agency’s Commercial Crew Program. Behnken and Hurley are slated to fly on the company’s first crewed mission, Demo-2.

NASA’s SpaceX Crew-3 astronauts participate in a countdown dress rehearsal at the agency’s Kennedy Space Center in Florida on Oct. 28, 2021, to prepare for the upcoming Crew-3 launch. Matthias Maurer, with the European Space Agency, is inside the crew access arm leading to the company’s Crew Dragon spacecraft during the rehearsal. The four-person crew will launch aboard the Crew Dragon atop the Falcon 9 on Oct. 31 to the International Space Station. Launch is targeted for 2:21 a.m. EDT from Pad 39A. Crew-3 is the third crew rotation flight to the space station for NASA’s Commercial Crew Program, and the first flight of a new Crew Dragon spacecraft.

NASA’s SpaceX Crew-3 astronauts participate in a countdown dress rehearsal at the agency’s Kennedy Space Center in Florida on Oct. 28, 2021, to prepare for the upcoming Crew-3 launch. NASA astronaut Tom Marshburn, wearing a SpaceX spacesuit, is inside the crew access arm leading to the company’s Crew Dragon spacecraft during the rehearsal. Marshburn’ s spacesuit is embroidered with his name and the American flag. The four-person crew will launch aboard the Crew Dragon atop the Falcon 9 on Oct. 31 to the International Space Station. Launch is targeted for 2:21 a.m. EDT from Pad 39A. Crew-3 is the third crew rotation flight to the space station for NASA’s Commercial Crew Program, and the first flight of a new Crew Dragon spacecraft.

NASA’s SpaceX Crew-3 astronauts participate in a countdown dress rehearsal at the agency’s Kennedy Space Center in Florida on Oct. 28, 2021, to prepare for the upcoming Crew-3 launch. Matthias Maurer, with the European Space Agency (ESA), is inside the crew access arm leading to the company’s Crew Dragon spacecraft during the rehearsal. Maurer’s SpaceX spacesuit is embroidered with the ESA and SpaceX emblems. The four-person crew will launch aboard the Crew Dragon atop the Falcon 9 on Oct. 31 to the International Space Station. Launch is targeted for 2:21 a.m. EDT from Pad 39A. Crew-3 is the third crew rotation flight to the space station for NASA’s Commercial Crew Program, and the first flight of a new Crew Dragon spacecraft.

NASA’s SpaceX Crew-3 astronauts participate in a countdown dress rehearsal at the agency’s Kennedy Space Center in Florida on Oct. 28, 2021, to prepare for the upcoming Crew-3 launch. The astronauts are at Launch Pad 39A with the Falcon 9 and Crew Dragon behind them during the rehearsal. From left are NASA astronauts Kayla Barron, Raja Chari, Crew-3 commander, and Tom Marshburn, and European Space Agency astronaut Matthias Maurer. The four-person crew will launch aboard the Crew Dragon atop the Falcon 9 on Oct. 31 to the International Space Station. Launch is targeted for 2:21 a.m. EDT from Pad 39A. Crew-3 is the third crew rotation flight to the space station for NASA’s Commercial Crew Program, and the first flight of a new Crew Dragon spacecraft.

NASA’s SpaceX Crew-3 astronauts participate in a countdown dress rehearsal at the agency’s Kennedy Space Center in Florida on Oct. 28, 2021, to prepare for the upcoming Crew-3 launch. Matthias Maurer, with the European Space Agency, is inside the crew access arm leading to the company’s Crew Dragon spacecraft during the rehearsal. He is wearing a SpaceX spacesuit with his name and the German flag embroidered on it. The four-person crew will launch aboard the Crew Dragon atop the Falcon 9 on Oct. 31 to the International Space Station. Launch is targeted for 2:21 a.m. EDT from Pad 39A. Crew-3 is the third crew rotation flight to the space station for NASA’s Commercial Crew Program, and the first flight of a new Crew Dragon spacecraft.

NASA’s SpaceX Crew-3 astronauts participate in a countdown dress rehearsal at the agency’s Kennedy Space Center in Florida on Oct. 28, 2021, to prepare for the upcoming Crew-3 launch. The astronauts are at Launch Pad 39A with the Falcon 9 and Crew Dragon behind them during the rehearsal. From left are NASA astronauts Kayla Barron, Raja Chari, Crew-3 commander, and Tom Marshburn, and European Space Agency astronaut Matthias Maurer. The four-person crew will launch aboard the Crew Dragon atop the Falcon 9 on Oct. 31 to the International Space Station. Launch is targeted for 2:21 a.m. EDT from Pad 39A. Crew-3 is the third crew rotation flight to the space station for NASA’s Commercial Crew Program, and the first flight of a new Crew Dragon spacecraft.

NASA’s SpaceX Crew-3 astronauts participate in a countdown dress rehearsal at the agency’s Kennedy Space Center in Florida on Oct. 28, 2021, to prepare for the upcoming Crew-3 launch. From left are Matthias Maurer, with the European Space Agency, and NASA astronauts Tom Marshburn, Raja Chari, Crew-3 commander, and Kayla Barron. They are inside the crew access arm leading to the company’s Crew Dragon spacecraft during the rehearsal. The four-person crew will launch aboard the Crew Dragon atop the Falcon 9 on Oct. 31 to the International Space Station. Launch is targeted for 2:21 a.m. EDT from Pad 39A. Crew-3 is the third crew rotation flight to the space station for NASA’s Commercial Crew Program, and the first flight of a new Crew Dragon spacecraft.

NASA’s SpaceX Crew-3 astronauts participate in a countdown dress rehearsal at the agency’s Kennedy Space Center in Florida on Oct. 28, 2021, to prepare for the upcoming Crew-3 launch. From left are NASA astronauts Tom Marshburn, pilot, and Raja Chari, Crew-3 commander. They are inside the crew access arm leading to the company’s Crew Dragon spacecraft during the rehearsal. The four-person crew will launch aboard the Crew Dragon atop the Falcon 9 on Oct. 31 to the International Space Station. Launch is targeted for 2:21 a.m. EDT from Pad 39A. Crew-3 is the third crew rotation flight to the space station for NASA’s Commercial Crew Program, and the first flight of a new Crew Dragon spacecraft.

NASA’s SpaceX Crew-3 astronauts participate in a countdown dress rehearsal at the agency’s Kennedy Space Center in Florida on Oct. 28, 2021, to prepare for the upcoming Crew-3 launch. The astronauts are at the Neil Armstrong Operations and Checkout Building as they prepare to enter the Tesla cars for the trip to Launch Pad 39A during the rehearsal. In view is European Space Agency astronaut Matthias Maurer. The four-person crew will launch aboard the Crew Dragon atop the Falcon 9 on Oct. 31 to the International Space Station. Launch is targeted for 2:21 a.m. EDT from Pad 39A. Crew-3 is the third crew rotation flight to the space station for NASA’s Commercial Crew Program, and the first flight of a new Crew Dragon spacecraft.

NASA’s SpaceX Crew-3 astronauts participate in a countdown dress rehearsal at the agency’s Kennedy Space Center in Florida on Oct. 28, 2021, to prepare for the upcoming Crew-3 launch. At left is Matthias Maurer, with the European Space Agency (ESA), and NASA astronaut Kayla Barron. They are inside the crew access arm leading to the company’s Crew Dragon spacecraft during the rehearsal. The four-person crew will launch aboard the Crew Dragon atop the Falcon 9 on Oct. 31 to the International Space Station. Launch is targeted for 2:21 a.m. EDT from Pad 39A. Crew-3 is the third crew rotation flight to the space station for NASA’s Commercial Crew Program, and the first flight of a new Crew Dragon spacecraft.

NASA’s SpaceX Crew-3 astronauts participate in a countdown dress rehearsal at the agency’s Kennedy Space Center in Florida on Oct. 28, 2021, to prepare for the upcoming Crew-3 launch. From left are Matthias Maurer, with the European Space Agency, and NASA astronauts Tom Marshburn, Raja Chari, Crew-3 commander, and Kayla Barron. They are inside the crew access arm leading to the company’s Crew Dragon spacecraft during the rehearsal. The four-person crew will launch aboard the Crew Dragon atop the Falcon 9 on Oct. 31 to the International Space Station. Launch is targeted for 2:21 a.m. EDT from Pad 39A. Crew-3 is the third crew rotation flight to the space station for NASA’s Commercial Crew Program, and the first flight of a new Crew Dragon spacecraft.

NASA’s SpaceX Crew-3 astronauts participate in a countdown dress rehearsal at the agency’s Kennedy Space Center in Florida on Oct. 28, 2021, to prepare for the upcoming Crew-3 launch. In this view is a close-up of the NASA and SpaceX embroidered emblems on the SpaceX spacesuit worn by NASA astronaut Kayla Barron. Barron is inside the crew access arm leading to the company’s Crew Dragon spacecraft during the rehearsal. The four-person crew will launch aboard the Crew Dragon atop the Falcon 9 on Oct. 31 to the International Space Station. Launch is targeted for 2:21 a.m. EDT from Pad 39A. Crew-3 is the third crew rotation flight to the space station for NASA’s Commercial Crew Program, and the first flight of a new Crew Dragon spacecraft.

NASA’s SpaceX Crew-3 astronauts participate in a countdown dress rehearsal at the agency’s Kennedy Space Center in Florida on Oct. 28, 2021, to prepare for the upcoming Crew-3 launch. In this view is a close-up of the American flag and Kayla Barron’s name embroidered on the SpaceX spacesuit she is wearing. Barron is inside the crew access arm leading to the company’s Crew Dragon spacecraft during the rehearsal. The four-person crew will launch aboard the Crew Dragon atop the Falcon 9 on Oct. 31 to the International Space Station. Launch is targeted for 2:21 a.m. EDT from Pad 39A. Crew-3 is the third crew rotation flight to the space station for NASA’s Commercial Crew Program, and the first flight of a new Crew Dragon spacecraft.

KENNEDY SPACE CENTER, FLA. -- Space shuttle Atlantis STS-122 Mission Specialist Stanley Love arrives at Launch Pad 39A, dressed in his launch and entry suit, to participate in a simulated launch countdown aboard Atlantis. The exercise is part of terminal countdown demonstration test, or TCDT, activities at NASA's Kennedy Space Center. The TCDT is a dress rehearsal for launch and also provides astronauts and ground crews with equipment familiarization and emergency egress training. On mission STS-122, Atlantis will deliver the Columbus module to the International Space Station. The European Space Agency's largest single contribution to the station, Columbus is a multifunctional, pressurized laboratory that will be permanently attached to U.S. Node 2, called Harmony. The laboratory will expand the research facilities aboard the station, providing crew members and scientists from around the world the ability to conduct a variety of experiments in the physical, materials and life sciences. Atlantis' launch is targeted for Dec. 6. Photo credit: NASA/George Shelton

KENNEDY SPACE CENTER, FLA. -- Space shuttle Atlantis STS-122 Commander Steve Frick arrives at Launch Pad 39A, dressed in his launch and entry suit, to participate in a simulated launch countdown aboard Atlantis. The exercise is part of terminal countdown demonstration test, or TCDT, activities at NASA's Kennedy Space Center. The TCDT is a dress rehearsal for launch and also provides astronauts and ground crews with equipment familiarization and emergency egress training. On mission STS-122, Atlantis will deliver the Columbus module to the International Space Station. The European Space Agency's largest single contribution to the station, Columbus is a multifunctional, pressurized laboratory that will be permanently attached to U.S. Node 2, called Harmony. The laboratory will expand the research facilities aboard the station, providing crew members and scientists from around the world the ability to conduct a variety of experiments in the physical, materials and life sciences. Atlantis' launch is targeted for Dec. 6. Photo credit: NASA/George Shelton

KENNEDY SPACE CENTER, FLA. -- Space shuttle Atlantis STS-122 Mission Specialist Leland Melvin arrives at Launch Pad 39A, dressed in his launch and entry suit, to participate in a simulated launch countdown aboard Atlantis. The exercise is part of terminal countdown demonstration test, or TCDT, activities at NASA's Kennedy Space Center. The TCDT is a dress rehearsal for launch and also provides astronauts and ground crews with equipment familiarization and emergency egress training. On mission STS-122, Atlantis will deliver the Columbus module to the International Space Station. The European Space Agency's largest single contribution to the station, Columbus is a multifunctional, pressurized laboratory that will be permanently attached to U.S. Node 2, called Harmony. The laboratory will expand the research facilities aboard the station, providing crew members and scientists from around the world the ability to conduct a variety of experiments in the physical, materials and life sciences. Atlantis' launch is targeted for Dec. 6. Photo credit: NASA/George Shelton

KENNEDY SPACE CENTER, FLA. -- Space shuttle Atlantis STS-122 Pilot Alan Poindexter arrives at Launch Pad 39A, dressed in his launch and entry suit, to participate in a simulated launch countdown aboard Atlantis. The exercise is part of terminal countdown demonstration test, or TCDT, activities at NASA's Kennedy Space Center. The TCDT is a dress rehearsal for launch and also provides astronauts and ground crews with equipment familiarization and emergency egress training. On mission STS-122, Atlantis will deliver the Columbus module to the International Space Station. The European Space Agency's largest single contribution to the station, Columbus is a multifunctional, pressurized laboratory that will be permanently attached to U.S. Node 2, called Harmony. The laboratory will expand the research facilities aboard the station, providing crew members and scientists from around the world the ability to conduct a variety of experiments in the physical, materials and life sciences. Atlantis' launch is targeted for Dec. 6. Photo credit: NASA/George Shelton

KENNEDY SPACE CENTER, FLA. -- Space shuttle Atlantis STS-122 Mission Specialist Rex Walheim arrives at Launch Pad 39A, dressed in his launch and entry suit, to participate in a simulated launch countdown aboard Atlantis. The exercise is part of terminal countdown demonstration test, or TCDT, activities at NASA's Kennedy Space Center. The TCDT is a dress rehearsal for launch and also provides astronauts and ground crews with equipment familiarization and emergency egress training. On mission STS-122, Atlantis will deliver the Columbus module to the International Space Station. The European Space Agency's largest single contribution to the station, Columbus is a multifunctional, pressurized laboratory that will be permanently attached to U.S. Node 2, called Harmony. The laboratory will expand the research facilities aboard the station, providing crew members and scientists from around the world the ability to conduct a variety of experiments in the physical, materials and life sciences. Atlantis' launch is targeted for Dec. 6. Photo credit: NASA/George Shelton

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.