A cloud of collapsing gas created our Sun, the first thing to form in our solar system. This happened about 4½ billion years ...

Snapchat Friend Solar System is a premium feature that lets you visualize your closest friends as planets that revolve around ...

Did you know our solar system might have had an extra planet? Scientists believe a mysterious ninth planet once existed but ...

This week, an old astronomical controversy is renewed as researchers present new evidence for a hidden "Planet X" in our ...

Stars that pass close to the solar system could pull planets out of alignment, sending them hurtling into the sun or out into ...

To better understand Jupiter’s primordial stages, researchers turned to the tiniest of the planet’s 92 known moons. Almathea ...

At long last, particles of water–ice have been discovered in the frozen Kuiper Belt of another star. The discovery, made by ...

Scientists have long been intrigued by the search for water beyond Earth, and NASA's 2012 discovery on Mercury has ...

The mystery of how planets and icy objects formed in the farthest reaches of our solar system just took an exciting turn. A ...

The White House's 2026 budget request axes NASA's long-held plan to bring Mars samples to Earth for analysis. Here's why that cancellation would be a mistake.

"How planets are born is an unsolved area of research," astrophysicist Daniel Price of Australia's Monash University told ...