ALT NHQ202512200036 Artemis II crewmembers NASA astronauts Reid Wiseman, commander; Victor Glover, pilot; Christina Koch, mission specialist; and CSA (Canadian Space Agency) astronaut Jeremy Hansen, mission specialist; are led by Bill Owens of the Closeout Crew from the elevator at the 275-foot level of the mobile launcher to the crew access arm as they prepare to board their Orion spacecraft atop NASA’s Space Launch System rocket during the Artemis II countdown demonstration test, Saturday, Dec. 20, 2025, inside the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida. For this operation, the Artemis II crew and launch teams are simulating the launch day timeline including suit-up, walkout, and spacecraft ingress and egress.  Through the Artemis campaign, NASA will send astronauts to explore the Moon for scientific discovery, economic benefits, and to build the foundation for the first crewed missions to Mars, for the benefit of all. Photographer: Joel Kowsky - Headquarte

ALT jsc2025e063520_alt Official NASA portrait of Expedition 74 crew member Christopher Williams in an EMU space suit. Photographer:  Bill Stafford – Johnson Space Center

ALT GSFC_20250527_LISA_005699 Technician Kyle Guzek installs a connector on the Laser Optical Module for the Laser Interferometer Space Antenna (LISA) mission at NASA's Goddard Space Flight Center in Greenbelt, Maryland on May 27th, 2025. Photographer: Denny Henry – Goddard Space Flight Center

ALT NHQ202504050009 In this image taken with a circular fisheye lens, the Soyuz rocket is seen as it is raised into a vertical position after being rolled out by train to the launch pad at Site 31, Saturday, April 5, 2025, at the Baikonur Cosmodrome in Kazakhstan. Expedition 73 crewmembers: NASA astronaut Jonny Kim, and Roscosmos cosmonauts Sergey Ryzhikov and Alexey Zubritskiy, are scheduled to launch aboard their Soyuz MS-27 spacecraft on April 8.  Photographer: Joel Kowsky - Headquarters

ALT NHQ202503180023 Support teams work around a SpaceX Dragon spacecraft shortly after it landed with NASA astronauts Nick Hague, Suni Williams, Butch Wilmore, and Roscosmos cosmonaut Aleksandr Gorbunov aboard in the water off the coast of Tallahassee, Florida, Tuesday, March 18, 2025. Photographer: Keegan Barber - NASA Headquarters

ALT jsc2025e078652_alt NASA astronaut Jessica Meir poses with an Extravehicular Mobility Unit (EMU) spacesuit during an official portrait session at Johnson Space Center. Photographer: Josh Valcarcel - Johnson Space Center

ALT NHQ202511270054 NASA astronaut Chris Williams puts his hands to the glass of the bus with his children, as he and fellow crewmembers, Roscosmos cosmonauts Sergey Kud-Sverchkov, and Sergei Mikaev, depart the Cosmonaut Hotel to suit-up for their Soyuz launch, Thursday, Nov. 27, 2025, in Baikonur, Kazakhstan. The launch will send Williams, Kud-Sverchkov and Mikaev, on a mission to the International Space Station. Photographer: Bill Ingalls - Headquarters

ALT SSC-20251105-s00651 A November full moon rises over the B-2 Test Stand where the Artemis I core stage was successfully tested in 2021 at Stennis Space Center. Photographer: Danny Nowlin – Stennis Space Center.

ALT NHQ202508010063 In this black and white infrared image, a SpaceX Falcon 9 rocket carrying the company's Dragon spacecraft is launched on NASA’s SpaceX Crew-11 mission to the International Space Station with NASA astronauts Zena Cardman, Mike Fincke, JAXA (Japan Aerospace Exploration Agency) astronaut Kimiya Yui, and Roscosmos cosmonaut Oleg Platonov onboard, Friday, Aug. 1, 2025, from NASA's Kennedy Space Center in Florida. NASA’s SpaceX Crew-11 mission is the eleventh crew rotation mission of the SpaceX Dragon spacecraft and Falcon 9 rocket to the International Space Station as part of the agency’s Commercial Crew Program. Cardman, Fincke, Yui, Platonov launched at 11:43 a.m. EDT from Launch Complex 39A at the NASA's Kennedy Space Center to begin a six month mission aboard the orbital outpost.  Photographer: Joel Kowsky - Headquarters

ALT jsc2025e073969_alt ESA Astronaut Sophie Adenot Pauses For A Pensive Moment During Her Official NASA Portrait  Photographer: David DeHoyos - Johnson Space Center

ALT NHQ202503270053 Grant Bruner, left, and Gary Kirkendall, right, Orion suit technicians, are seen with ESA (European Space Agency) astronaut Luca Parmitano, second from left, and NASA astronauts Deniz Burnham, center, and Andre Douglas, as they prepare to participate in Artemis recovery operations as part of Underway Recovery Test-12 onboard USS Somerset, Thursday, March 27, 2025. During the test, NASA and Department of Defense teams are practicing to ensure recovery procedures are validated as NASA plans to send the Artemis II astronauts around the Moon and splashdown in the Pacific Ocean.  Photographer: Joel Kowsky - Headquarters

ALT NHQ202512200050 NASA’s Space Launch System rocket is seen inside high bay 3 of the Vehicle Assembly Building as Artemis II crewmembers NASA astronauts Reid Wiseman, commander; Victor Glover, pilot; Christina Koch, mission specialist; and CSA (Canadian Space Agency) astronaut Jeremy Hansen, mission specialist; board their Orion spacecraft atop the rocket during the Artemis II countdown demonstration test, Saturday, Dec. 20, 2025, NASA’s Kennedy Space Center in Florida. For this operation, the Artemis II crew and launch teams are simulating the launch day timeline including suit-up, walkout, and spacecraft ingress and egress.  Through the Artemis campaign, NASA will send astronauts to explore the Moon for scientific discovery, economic benefits, and to build the foundation for the first crewed missions to Mars, for the benefit of all.  Photographer: Joel Kowsky - Headquarters