Aliens exist - they just haven't visited Earth, NASA veteran Dr Gentry Lee has claimed.

Self-proclaimed godman Ponga Hariom Das has grabbed headlines after claiming that he has travelled across planets, visited ...

Are aliens real? The question has animated conspiracy theories for decades and enthralled at least one former president of ...

:rocket: Could aliens be hiding on a frozen twin of Earth? NASA has just discovered a rocky exoplanet that’s remarkably similar to our home planet — and it’s shaking up the search for alien life.

Documents might help scientists shed light on unexplained phenomena and government secrets, experts said.

Astrophysicist Neil deGrasse Tyson will be speaking at the Civic Theater in San Diego about the search for habitable planets and intelligent life in the universe.

Getting astronauts to Mars is only half the mission — the real problem is bringing them back. NASA engineers are designing the Mars Ascent Vehicle (MAV), a rocket that must launch from the surface of ...

With Area 51 ruled out by President Obama, where might aliens really be hiding? Scientists have now revealed the best candidates.

A viral Obama podcast answer about aliens prompted Trump to accuse him of revealing secrets and promise to release UFO files ...

A new paper suggests that BARSOOM may have been alive on the planet, and was killed in the Viking experiments.

American space agency NASA announced it found a new way to allow the Perseverance rover to determine its position on Mars by itself.