One moment occurred in 1984 when NASA astronaut Bruce McCandless II became the first human to spacewalk or float free from any earthly anchor when he stepped out of the space shuttle Challenger and ...

A former NFL player turned NASA astronaut who helped build the International Space Station is set to speak at CU Boulder.

WASHINGTON, March 14 (Reuters) - (This March 14 story has been refiled to remove the redundant 'on Sunday' in paragraph 5) NASA and SpaceX on Friday launched a long-awaited crew to the ...