For the first time, astronomers have directly measured the mass of a rogue planet, a celestial body wandering through space ...

On January 5, 2005, astronomers at NASA discovered Eris, the second-largest dwarf planet in the solar system. Eris is just ...

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

Jupiter, as always, is a dazzling object, shining among the stars of Gemini the Twins. It reaches opposition on Jan. 10; this ...

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

Astronomers have spotted something unusual, a planet that doesn’t orbit any star. It’s just drifting alone through space.

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

There could be a ninth planet in our solar system that's lying in wait to be discovered - and no, it's not Pluto. Our solar ...

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

Stars and planets are inextricably linked. They form together and stars shape the fate of planets. Stars create the dusty ...

Choose your fighter for the origin of water on Earth! Was it always here or did it come to this planet from somewhere else in ...

Jupiter is the largest planet in the solar system, known for its massive size, strong gravity, powerful storms and many moons ...