On 20 December 2025, four NASA astronauts had a dress rehearsal for their upcoming trip around the moon.
Before these four astronauts travel farther from Earth than any other humans have traveled, they practice the launch countdown, mimicking exactly what they will do when they officially launch into space — everything except for blast off.
Here's more about the Artemis II mission, which will be the first piloted trip back to the moon since the Apollo 17 mission in 1972.












