If and when SETI discovers alien life, a revised Declaration of Principles guarantees once the discovery has been verified, ...

The object, called 3I/ATLAS, is only the third interstellar visitor ever detected passing through our Solar System.

The group leading the charge in the search for extraterrestrial life has given the all clear: An interstellar comet looks to ...

Could intelligent alien civilizations really exist somewhere beyond Earth? As advanced telescopes continue discovering new potentially habitable worlds every year, that possibility seems more ...

ET may be trying to contact Earth - and aliens just might receive their reply in an Irish accent. Irish space researchers were astonished when it emerged a remote Russian observatory detected a strong ...

Suppose there are signs of extraterrestrial life and we have not yet been able to detect them. What does that mean? In Nature Astronomy, researchers discuss the consequences of these so-called ...

The daisy-shaped 'occulter' could be a simple solution to the problem of a star's light swamping the view of small rocky planets, a study suggests. The daisy-shaped 'occulter' could be a simple ...

The trick isn't to just search for biosignatures, but rather to look at how they are organized — and the Europa Clipper has an instrument for this. When you purchase through links on our site, we may ...

The rock, Clinton said, “speaks to us across … billions of years and millions of miles. It speaks of the possibility of life.

This could be why we still haven’t found alien life - Traces left behind by organisms on alien worlds may be too subtle to ...

Jay Stratton's memoir, 'Out of the Shadows,' is being published Oct. 13 ...

TOKYO The US commander of space shuttle Discovery believes life probably exists somewhere in outer space, but there is a simple reason why aliens have not visited earth -- the journey is too tough.