The newly discovered world is called GJ 251c and it is a super-Earth orbiting a red dwarf star less than 20 light-years away.

A newly discovered planet sits in the habitable zone of its star, where temperatures are right for liquid water if the ...

It's just 18 light-years away: a super-Earth named GJ 251c with a minimum mass about 3.84 times that of our own planet. The ...

Did NASA find another Earth? Scientists look to the sky to find a copy of our planet, and some experts think they may have ...

Astronomers have spotted a quasi-moon near Earth — and the small space rock has likely been hanging out near our planet ...

CAPE CANAVERAL, Fla. -- Earth-like worlds may be closer and more plentiful than anyone imagined. Astronomers reported Wednesday that the nearest Earth-like planet may be just 13 light-years away -- or ...

An enormous asteroid is approaching Earth at 24,136 miles per hour—and will be at its closest to us in two days' time. The ...

In the distant past, the solar system was rife with impacts and collisions. Millions of rocky objects zoomed chaotically ...

It sounds like a sci-fi plot, but it’s a cold, hard scientific fact: our closest cosmic neighbor, the moon, is slowly moving ...

An international team of researchers has just revealed the existence of three Earth-sized planets in the binary stellar ...

THAT’s NO MOON - Earth doesn’t just have one moon; sometimes, it has a companion satellite or “mini-moon.” Discovered on ...