The Hubble Space Telescope has captured a spectacular new image of the largest and most unusual protoplanetary disk ever ...

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

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

It was almost 100 years ago that Clyde W. Tombaugh discovered Pluto. That was the last planet found until 1992, when humans found another one. But this new planet wasn't in our solar system—it was ...

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

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 ...

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

Leonardo Testi and team investigate the initial conditions for planet formation in this special astronomy focus ...

Two separate research teams have observed a previously unseen microlensing event, confirming the existence of a particular ...