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

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

A four-planet system reveals remarkable insights about how planets form and how they change during their lifetime.

With sapphire waterfalls, lava rain and orbits around dead stars, these distant worlds push the limits of what’s possible.

Jupiter, as always, is a dazzling object, shining among the stars of Gemini the Twins. It reaches opposition on Jan. 10; this ...

The upcoming year will offer a blood-red moon, spectacular meteor showers and the first glimpse of the sun’s corona since ...

Relying on information from NASA's TESS telescope, astronomers Edward Bryant from the University of Warwick and Vincent Van ...

So far, humanity has yet to find its first "exomoon"—a moon orbiting a planet outside of the solar system. But that hasn't ...

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

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

Superionic water—the hot, black and strangely conductive form of ice that exists in the center of distant planets—was ...

New research tracks young planets around a nearby star, showing how large, gas-rich worlds shrink over time to become the most common planets in the galaxy ...