Scientists believe our solar system may be hiding a secret world — and it’s not the famous Planet X :eyes: A new study ...

When my colleagues and I send them out to explore our solar system, it's important for us to understand the 3D map of our ...

Since the Kepler Space Telescope began its prowl for exoplanets in 2009, it has uncovered a strange pattern among these alien ...

Planet Y is the latest in a series of hypothetical solar system planets that scientists have proposed in recent years, all with slightly different characteristics but collectively believed to be ...

Planet 9 sits at the edge of scientific imagination, promising either an epic expansion of the Solar System or a lesson in ...

This frozen frontier holds the scattered remains of the early solar system, offering scientists rare clues about how planets took shape. Hidden within this region are trans-Neptunian objects, or TNOs, ...

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

Astronomers have, for the first time, captured a detailed snapshot of planetary systems in an era long shrouded in mystery.

LONDON — 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 ...