Saturday, December 20, 2025

Orion's First Astronauts Conduct Their Countdown Demonstration Test for Next Year's Moon Mission...

The four Artemis 2 astronauts greet the crowd outside the Neil A. Armstrong Operations and Checkout Building at NASA's Kennedy Space Center in Florida...before heading to the Vehicle Assembly Building to conduct their countdown demonstration test on December 20, 2025.
NASA / Jim Ross

Artemis II Crew Rehearse Launch Day Demonstration (News Release)

The four astronauts set to fly around the Moon during NASA’s Artemis II test flight depart the Neil A. Armstrong Operations and Checkout Building at the agency’s Kennedy Space Center in Florida, during a dress rehearsal for launch day on December 20, 2025. From left are CSA (Canadian Space Agency) astronaut Jeremy Hansen, NASA astronauts Victor Glover, Reid Wiseman and Christina Koch.

The launch day rehearsal, called a countdown demonstration test, simulated the launch day timeline, including the crew suiting up in their spacesuits and climbing in and out of their Orion spacecraft. Because the SLS (Space Launch System) rocket upon which they will launch is not yet at the launch pad, the crew boarded Orion inside Kennedy’s Vehicle Assembly Building, where engineers are conducting final preparations on the spacecraft, rocket and ground systems.

Through Artemis, NASA will send astronauts to explore the Moon for scientific discovery, economic benefits, and build the foundation for the first crewed missions to Mars.

Source: NASA.Gov

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The four Artemis 2 astronauts prepare to depart from the Neil A. Armstrong Operations and Checkout Building to head to the Vehicle Assembly Building to conduct their countdown demonstration test...on December 20, 2025.
NASA / Glenn Benson

The four Artemis 2 astronauts prepare to depart from the Neil A. Armstrong Operations and Checkout Building to head to the Vehicle Assembly Building to conduct their countdown demonstration test...on December 20, 2025.
NASA / Glenn Benson

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