Former NASA astronaut Mike Massimino, known for his work on the Hubble Space Telescope and who flew on two space missions, has weighed in on one of humanity's biggest questions: Are we alone in the ...

A former NASA staffer has claimed one of the astronauts on board the Challenger space shuttle saw footage of alien corpses that perished in a UFO crash, RadarOnline.com can reveal. Forty years ago, on ...

The best reason to send humans to Mars isn’t for guts or glory—or the construction of colonies to safeguard against existential Earth-bound risks. Instead it’s to answer a single, simple question: Is ...