Scientists found a mysterious rogue planet roaming aimlessly outside our solar system. What if it came closer?

A new discovery suggests the possibility of an exomoon with an unprecedentedly large mass, thousands of times larger than any ...

A young star called V1298 Tau is giving astronomers a front-row seat to the birth of the galaxy’s most common planets. Four ...

Solar wind sounds poetic, but it's a very real and powerful phenomenon, connecting the Sun to every part of our solar system. Unlike the wind we feel .

A rare discovery beyond Neptune is forcing scientists to rethink early solar system dynamics and the forces that shaped ...

Realising that our solar system isn’t like most others out there has helped astronomers rewrite the story of how it formed ...

The Ghost of the Solar System: Why Can't We Find Planet 9? Deep in the outer reaches of our solar system, far beyond Neptune and Pluto, something massive is hiding in the dark. Scientists call it ...

With an orbital period around one year, much like Earth's 13-hour transit duration, HD 137010 b tantalises as Earth 2.0.

Astronomers have long sought evidence to explain why comets at the outskirts of our own solar system contain crystalline ...

At the heart of our own galaxy, there is a dense thicket of stars with a supermassive black hole at the very center. NASA's ...

Polygon has rounded up the best icy sci-fi planets from our favorite video games, movies, television, and books ...