A rocky world orbiting within its star’s habitable zone may be surrounded by a helium-rich atmosphere, providing the ...

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Imagine receiving a message from another world. Not from a distant galaxy millions of light years away, but from a planet ...

Add Yahoo as a preferred source to see more of our stories on Google. An illustration of an exoplanet in an alien star system. New research suggests that radio emissions from intelligent aliens may be ...

Astronomers have revised the mass of nearby exoplanet GJ 3378 b, recasting it as a rocky super‑Earth in the habitable zone ...

Star Trek turned one of its oldest alien species into a full-blown nightmare — and this episode laid the terrifying ...

K2-18b is one of the most promising worlds for the search for extraterrestrial life, so astronomers conducted an unusually ...

The team say the presence of Beta Pictoris d also helps clear up a mystery surrounding the star system.

Eventually, we'll launch a mission dedicated solely to studying an interstellar object. When that day comes, which one should ...

An international team of astronomers reports the discovery of a new exoplanet orbiting a sunlike star as part of the Next ...

A strange interstellar comet discovered last year and speculated by a prominent astronomer to be an alien spacecraft could be older than our Solar System, according to a new study. The comet, first ...

The odds of there being another intelligent life form in the Milky Way are pretty good given the billions of stars. But we ...