The Space Shuttle Columbia Memorial is seen during a wreath laying ceremony that was part of NASA's Day of Remembrance, ...

Portugal is the latest nation to sign the Artemis Accords alongside 59 other countries in a commitment to advancing exploration.

NASA will observe its annual Day of Remembrance on Thursday, Jan. 22, which includes commemorating the crews of Apollo 1 and the space shuttles Challenger and Columbia. The event is traditionally held ...