In the 21st century, the theories regarding the existence of aliens refuse to dial down. Now, the recently resurfaced NASA photo of Martian planet has gone viral on various social media ...

A three-armed spacecraft is rushing to the rescue of a NASA telescope that’s in danger of crashing back to Earth.

When the U.S. was born, humanity was still seven years away from balloon-borne flight. Where might we be another 250 years from now, should the nation be fortunate enough to survive that long?

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

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

A polarizing Harvard astronomer known for splashy theories about alien visits has been tapped by the Trump administration to lead a team of outside scientists to study the national security risks ...

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 ...

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 ...