NASA TV Coverage Scheduled for Upcoming Spacewalks, Briefing

NASA’s Perseverance Rover Sends Sneak Peek of Mars Landing

A NASA Mars orbiter snapped this shot of Perseverance as it was descending via parachute...

'Astronaut’ means 'star sailor.' NASA chose it in 1958 over 'cosmonaut,' or 'universe sailor.' But "Why 'astronaut' won out," says a NASA Johnson Space Center historian, "is a mystery." The reason we chose that term for our space travelers "Was never recorded in NASA’s own historical documents."