If life once existed in Jezero Crater, signs of it may well persist there to this day.
The U.S. Air Force must change the way it does business to fight the growing threat to the nation's dominance of the final frontier, military officials say.
Pete Conrad and Alan Bean make a jolly, blind, pinpoint lunar landing and grab rock samples revealing the Moon's strange birth.
Near the edge of Jamaica Bay in New York City, about a dozen people gathered to watch Mercury travel across the sun.
A bright fireball meteor streaked across the night sky above Missouri Monday (Nov. 11), passing over St. Louis' iconic Gateway Arch.