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

Hubble Space Telescope observations of white dwarf star G238-44 has shown that it is "consuming both rocky-metallic and icy ...

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 ...

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

Scientists have discovered more than 6,000 planets beyond our solar system. What if some of them aren't planets at all, but ...

Around the bright star Fomalhaut, astronomers spotted glowing clouds of debris left behind by colossal collisions between ...

Which way is ‘down’ has a different answer depending on where you are on Earth, in the solar system, in our galaxy and beyond ...

Spectacular clouds swirl across the surface of Jupiter. These clouds contain water, just like Earth's, but are much denser on ...

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 ...

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