Astronomers are closing in on one of the most tantalizing possibilities in planetary science, evidence that a previously ...

Far beyond Neptune, something heavy appears to be tugging on the outer solar system, bending the paths of distant icy worlds ...

One of the biggest recent surprises in astronomy is the discovery that most stars like the Sun harbor a planet between the ...

What was originally thought to be a planet orbiting the Fomalhaut star was probably just the fallout of a wild collision.

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

The search for an unknown planet in our solar system has inspired astronomers for more than a century. Now, a recent study suggests a potential new candidate, which the paper’s authors have dubbed ...

Mercury has long baffled astronomers because it defies much of what we know about planet formation. A new space mission ...

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

How are the most common types of planets made? This is what a recent study published in Nature hopes to address as a team of ...