In doing so, they found this orphan is within the same weight class as Saturn, strengthening the case that the galaxy teems ...

Scientists measured mass and distance of free floating planet drifting through space without star for first time.

Scientists have discovered a rogue planet roaming the Milky Way after combining observations from Earth and a space telescope ...

Astronomers have just confirmed one of the strangest kinds of worlds imaginable, a planet drifting through the galaxy with no ...

Astronomers have signalled the discovery of a planetary body roaming the Milky Way that is not gravitationally bound to the ...

Astronomers have finally weighed a wandering “rogue” planet, uncovering a Saturn-mass world flung into the galaxy after a dramatic planetary breakup.

Rogue planets — worlds that drift through space alone without a star — largely remain a mystery to scientists. Now, ...

WASHINGTON — Scientists have estimated the first cosmic census of planets in our galaxy and the numbers are astronomical: at least 50 billion planets in the Milky Way. At least 500 million of those ...

With sapphire waterfalls, lava rain and orbits around dead stars, these distant worlds push the limits of what’s possible.

The Milky Way just got a lot more crowded — with planets. NASA on Tuesday announced 1,284 new planets orbiting stars outside our solar system, called exoplanets. That's on top of the approximately ...

For centuries our solar system was the only planetary system known to humans. We had no proof other worlds existed beyond those in our own cosmic backyard, and we imagined that if other planetary ...