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

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

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

Scientists studying the interstellar object ‘Oumuamua have proposed that it may be a fragment from a Pluto-like planet beyond ...

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

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

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

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

Astronomers tracking the skies around our planet have picked up two very different cosmic companions: a vast interstellar ...

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

The coldest and densest molecular gas clouds in the interstellar medium can have temperatures of 10 K (-505 °F/-263 °C), ...

A mysterious comet flying through our solar system may be doing more than just passing by—it could help explain how giant planets like Jupiter are born. At a major planetary science conference in ...