MADISON, WIS.—Some U.S. scientists are helping search for evidence of alien life not by looking into outer space, but by studying some rocks right here on Earth. Some of the rocks are up to 3.5 ...

A Harvard University astrophysicist claims biological creatures would not be able to survive the journey to Earth, which puts the kibosh on any reports on alien sightings in our skies. Avi Loeb says ...

Given the size and age of the universe, it should be full of species with technology far more advanced than our own. But so far there is no trace ...

Steven Spielberg's claims that aliens have already visited Earth have drawn a mixed but pointed scientists' reaction this week, with astrophysicists in the UK and Australia stressing that while ...

The newly discovered exoplanets, designated as GJ 9827 b, c and d, are located fairly close to their host star, completing orbits within 6.2 days. ESO A nearby 'super‑Earth' just 25 light years from ...