The origin of super-Earths and sub-Neptunes has been revealed in a system of four young planets that are dramatically losing ...

Exoplanets like Earth have been discovered but not all Earth-like planets are equal when it comes to alien life.

Planets usually stay close to their host stars, tracing steady paths shaped by gravity. Yet some planets break free and drift ...

Astronomers have captured the most dramatic view yet of a planet losing its atmosphere, watching the ultra-hot gas giant WASP ...

Thanks to the discovery of thousands of exoplanets to date, we know that planets bigger than Earth but smaller than Neptune ...

At half the size of Earth and one-tenth its mass, Mars is a featherweight as far as planets go. Yet new research reveals the ...

Astronomers may have finally worked out how planets between the size of Earth and Neptune – which aren't found in our Solar ...

GRAVITY Universe Time Clock uses magnetic levitation to create an illusion of time orbiting like a planet in space.

The star system V1298 Tau reveals that many planets begin as large, low-density worlds that slowly shrink and shed their ...

Somewhere between the stars, far from any sun, a planet is moving quietly through space. There is no orbit to trace and no ...

When we imagine a planet, we think of one like ours, orbiting a star. But some have a far lonelier existence, drifting through interstellar space without a sun to call their own. Known as “rogue” or ...

Astronomers have spotted something unusual, a planet that doesn’t orbit any star. It’s just drifting alone through space. About the size of Saturn, this planet is giving scientists a rare peek at ...