When it comes to the search for life elsewhere in the universe, methane and other chemical compounds are seen as signs of ...

Are we alone in the universe? Consider mysterious "extraterrestrial" radio signals. Unexplained gases on other planets.

The exoplanet telescope TESS revealed a distant world using an entirely different detection method than the one it was built ...

NASA's exoplanet-hunting spacecraft TESS has a new method for detecting worlds beyond the solar system, and it is thanks to ...

For your extraterrestrial viewing needs, Stacker ranked the top 30 alien movies, according to their IMDb user rating.

A joint analysis of James Webb Space Telescope observations spanning three instruments has found insufficient evidence for ...

A Harvard University cosmologist who has suggested alien life forms could be sailing into the solar system disguised as meteors is leading the Trump administration’s secretive new scientific advisory ...

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

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

Scientists say moons around rogue planets wandering through the galaxy could remain warm enough for life thanks to tidal heating and hydrogen-rich atmospheres. These dark, starless worlds may have had ...