Planet hunters have grown used to strange worlds, but a handful of discoveries now point to something even more radical: ...

A FIERY hell-world that would instantly roast visitors alive has a vast lava ocean – and may be packed with rare gems. The ...

After decades of searching, astronomers may have finally stumbled upon the first moon known to exist beyond our solar ...

Astronomers have discovered a distant exoplanet with a tail that stretches over 5.5 million miles long. Astronomers have accidentally found a planet with a debris trail like a comet that stretches up ...

Far beyond the eight familiar planets in our solar system, countless bizarre and extreme worlds await discovery — and some have already been found. Thanks to rapidly advancing telescope technology, ...

Why it's weird:Waterworld is possibly Kevin Costner's biggest regret. But in astronomy, a water world is far less disappointing. Discovered in December 2009, this planet has the best possibility of ...

With temperatures reaching almost 2,000 degrees Celsius on its dayside, LTT 9779 is one of the few known planets in the "hot ...

New James Webb telescope observations of the 'super-puff' planet WASP-107b show that the exoplanet's runaway atmosphere is ...

This illustration shows an exoplanet orbiting around two brown dwarfs –– objects bigger than gas-giant planets but too small to be proper stars. ESO/M. Kornmesser Astronomers have discovered a ...

Astronomers are just beginning to scratch the surface of the complex, and sometimes violent, relationships between planets ...

Astronomers have discovered a distant exoplanet with a tail that stretches over 5.5 million miles long. Credit: Jose-Luis Olivares / MIT illustration Astronomers have accidentally found a planet with ...