Of all the extrasolar planetary systems detected by astronomers in recent years, the star 47 Ursae Majoris and its known companions, two Jupiter-sized planets, is the one that most closely resembles ...

Earth is the only life-supporting planet in our Solar System. Until now. Today, we’re bringing Kepler 22-b into our planetary ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Morgan Underwood, Rice University (THE CONVERSATION) When astronomers search for ...

Scientists found an intriguing world in our galaxy. They confirmed the existence of a rocky planet, called a "super-Earth," that's some six times as massive as Earth. While the world HD 20794 d is ...

WASHINGTON, March 13 (Reuters) - Astronomers have identified a quartet of small rocky planets orbiting Barnard's star - one of our closest stellar neighbors - though they concluded that all of them ...

So far, humanity has yet to find its first "exomoon"—a moon orbiting a planet outside of the solar system. But that hasn't ...

What if humanity could no longer live on Earth? Perhaps a catastrophic event forced us to find a new home among the stars. Mars often comes to mind as a close option but surviving there is no small ...

The giants might've been kicked out, left to live a rogue lifestyle. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. A nearby binary star system ...

Moons orbiting planets outside our solar system could offer another clue about the pool of worlds that may be home to extra-terrestrial life, according to an astrophysicist at the University of ...

The TRAPPIST-1 solar system, depicted in this artist's impression, might harbor Earth clones with oceans and rich atmospheres. (Photo digital Illustration by NASA/NASA via Getty Images) A young ...