Donna Hare's decades-old claim that NASA airbrushed UFOs from photos resurfaces, sparking renewed interest and debate despite ...

A NASA whistleblower claimed that the space agency knowingly covered up proof of alien life captured in everyday photos.

Pandora mission is designeed to "provide in-depth study of at least 20 known planets orbiting distant stars," according to ...

A man, who was working on the question of "matter existing in two places simultaneously," went mysteriously missing.

Could humans spread Earth life beyond our planet? Astrobiologists explain where extremophiles might survive and why the risks ...

The Transiting Exoplanet Survey Satellite (TESS) revealed a distant planet located 40,000 light-years away using microlensing for the first time.

Thus far, our search for extraterrestrial life points toward Clarke’s former point, suggesting that our little blue dot is ...

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 ...

An image taken by Curiosity last month has sparked claims of a long-lost civilization on the Red Planet after some spotted a ...

This week Ars hosted a live discussion with two space industry experts about the aftermath of the catastrophic explosion of ...

This new group, which is led by Harvard professor Avi Loeb, aims to advise the Trump administration and the U.S. intelligence ...

A polarizing Harvard astronomer known for splashy theories about alien visits has been tapped by the Trump administration to ...