A free-floating planet drifting through space is being closely followed by scientists who are managing to find out more about ...

Shining in the constellation Gemini near the bright stars Pollux and Castor, Jupiter's opposition is the best time to see the ...

Scientists have identified an unexpected way to study the hidden space weather of distant stars by observing strange, ...

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

On Saturday (Jan. 10), for example, we will see three satellites on one side of Jupiter (going outward from the planet: Ganymede, Io and Europa ), while the fourth ( Callisto) remains all by itself on ...

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

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

A NEWLY discovered rogue planet without a host star like the sun to orbit around has been detected dashing through space on ...

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

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

While most planets that we are familiar with stick relatively close to their host star in a predictable orbit, some planets ...

Most planets are part of a star system of their own – but some go their own way, and they have remained largely mysterious ...