A rush rescue mission to save a NASA space telescope remains grounded, this time because of a last-minute launch problem.

The question of whether humanity is alone in the universe has fascinated scientists for generations, but few have pursued an ...

Avi Loeb, a Harvard astronomer who has made headlines with his theories about alien encounters, will lead a White House ...

Claims of an 'arms race' involving Russia and China, reverse-engineering, and crashed alien spacecraft re-emerged this month ...

A rare visitor from another star system prompted SETI to hunt for alien technology, but the mysterious object appears to be a ...

The Pegasus XL is an air-launched vehicle. It releases from a modified commercial airliner at about 39,000 feet, then ignites ...

Those pesky space aliens are at it again … or I should say, conspiracy theorists’ hopes, dreams, fantasies and wish fulfillment, along with a combination of government reluctance to give adversaries ...

The majority of Americans believe there is other intelligent life in the universe, CBS polling found, while one in five think extraterrestrials have already made contact with Earth. The poll comes as ...

The Alien franchise is doing pretty well right now, and its future looks even stronger for gamers. With Alien Isolation 2 serving the horror-oriented side of the fanbase right now, Aliens: Fireteam ...

Anthony Salvanto, Ph.D., is CBS News' executive director of elections and surveys. He oversees the CBS News Poll and all surveys across topics and heads the CBS News Decision Desk that estimates ...