No great endeavor ever undertaken since the beginning of civilization has not had people saying it can’t or shouldn’t be done ...

Astronomers discover a rare white dwarf formed by a stellar merger, challenging what we know about star death and cosmic collisions.

Delaying Mars Sample Return will make the human exploration of Mars significantly more expensive and dangerous — and for the ...

Spacecraft that could fuel up in orbit would be less weighed down at liftoff and fly deeper into space; making those refills ...

After his splashdown back to Earth on July 15, Shukla was in Houston re-acclimatising to gravity and debriefing with ...