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Aliens... do they really exist?

Alien Life Discovery Could Happen Within 20 Years

Search For Extraterrestrial Intelligence Institute Release First Observations From "Alien Megastructure" Star

Black hole

The largest and most luminous black hole ever seen dates black to when the universe was less than years

Ciencia e ingenieria globales.: Unión Astronómica Internacional convoca un concurs...

The International Astronomical Union (IAU) in charge of naming heavenly bodies will open its exoplanet naming process to the world in 2015 in the form of a public vote.

"Arrival" (2016) conveys the terror and the unblinking fascination that would very likely accompany the first human contact with aliens.

The prospect of aliens visiting Earth has been percolating through human thought for decades, thanks to countless sci-fi books and movies, such as the newly released film "Arrival." But it's still not clear how we would deal with the real thing.

Dr. Seth Shostak, a well-known senior scientist at the SETI Institute. Top U.S. Astronomers Tell Congress That Extraterrestrial Life Exists Without Question

Seth Shostak, a well-known senior scientist at the SETI Institute. Astronomers Tell Congress That Extraterrestrial Life Exists Without Question

A star is dimming for reasons that astronomers can't explain. Is it an alien megastructure? What sort of alien megastructures would be possible?

The mysterious dimming star KIC 8462852 probably doesn't host an alien megastructure. But if it did, what might such a megastructure look like?

For many people it is a question of when, not if, we discover intelligent life beyond the Solar System. But, when that time comes, how should the public be informed about what would arguably be the biggest story in human history?

For many people it is a question of when, not if, we discover intelligent life beyond the Solar System. But, when that time comes, how should the public be informed about what would arguably be the biggest story in human history?

Thousands of Air Force files on UFO sightings and investigations are now on the internet. UFO en...

Thousands of Air Force files on UFO sightings and investigations are now on the internet. UFO en...

Canada’s Defense Minister: Many Alien Species Visiting Earth (Video)

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