U.S. Officially Rejoins Paris Climate Agreement

'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 The reason we chose that term for our space travelers "Was never recorded in NASA’s own historical documents."

Scientists Clone Endangered Black-Footed Ferret For The First Time And She's Adorable

Perseverance’s ‘sky crane’ captures Mars descent