Over four billion years ago, the solar system was a wild and dangerous place. Swirling clouds of dust and gas slowly turned ...

Astronomers have discovered a brand new type of planet outside our solar system that, even in its infancy, is already bigger ...

F or the first time, researchers have dated the formation of Jupiter by studying tiny, bead-like spheres found preserved in ...

A team from Nagoya University in Japan and the Italian National Institute for Astrophysics (INAF) have used a new method to ...

Though Pluto has formally been considered a dwarf planet for almost two decades, it still has many lessons left for planetary scientists — including hints about how the solar system formed.

A young planet has been spotted outside our Solar System, captured by the Very Large Telescope in Chile. The rare image shows ...

How do scientists know how old Earth is? Learn how experts have measured Earth's age, and why it is more difficult to ...

The textbook picture of how planets form—serene, flat disks of cosmic dust—has just received a significant cosmic twist.

“The gas giants must have formed by 4 million years after the formation of the solar system,” Weiss says.

Researchers studying iron meteorites suggest the early solar system took more of a donut form rather than a dartboard-like series of concentric circles, as previously thought.