ufos extraterrestrials

A European Mars orbiter beamed a coded message to Earth today (May 24), kicking off a weeks-long project designed to help us prep for a real signal from E.T.

A new project called 'A Sign in Space' will give scientists and laypeople around the world practice at decoding a message from intelligent aliens.

Intelligent aliens looking for life in the universe might be able to find Earth using our radio signals, a new SETI study suggests.

The Pentagon's new UFO office has no evidence of any extraterrestrial or extraordinary objects.

An enormous halo of red light flashed in the night sky above Italy before disappearing within milliseconds. It was likely caused by an electromagnetic pulse from a nearby thunderstorm.

Alien life could thrive in terminator zones, the edges between the light and dark sides of planets that are tidally locked with their host stars.

A newly developed machine-learning tool could help scientists search for signs of life on Mars and other alien worlds.

Astrobiologists should examine space dust and other exoplanetary debris to search for the existence of life beyond Earth, a new study suggests.

The Air Force general overseeing North American airspace refused to rule out extraterrestrial forces at play after unidentified objects were shot down in February.

A newfound, highly adaptable bacterium shows the kind of diverse life to look for on Europa or Enceladus, astronomers say.