Across the Milky Way, planets slightly larger than Earth but smaller than Neptune appear around most stars. Yet our own solar ...

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

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

On Earth, you can look up at night and see the Moon shining bright from hundreds of thousands of miles away. But if you went to Venus, that wouldn’t be the case. Not every planet has a moon – so why ...

Stars and planets are inextricably linked. They form together and stars shape the fate of planets. Stars create the dusty ...

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

New research explains how dust links the formation, evolution, and fate of stars and planets, and why future telescopes are needed to observe these processes in detail ...

Our solar system officially houses eight planets, but some scientists say there could be a ninth. And that’s not just Pluto aficionados – evidence suggests a huge undiscovered world lurks on the dark ...

UNDATED (WKRC) - Scientists have discovered a planet that may be capable of supporting life despite it orbiting a dying sun. Researchers from University College London discovered the planet while ...

For years, the existence of a missing Planet 9 has been one of the predominate theories attempting to explain some of the eccentric orbits found in the outer Solar System. But so far, no such planet ...

What seemed like new planets around Fomalhaut were actually expanding dust clouds from violent planetary collisions seen by Hubble.