The strange blend of surface chemistry on Nix and Hydra raises big question about the evolution of the Pluto system.

Test your knowledge on our solar system, from the biggest and smallest planets to the behemoth mountain on Mars.

Io, roughly the size of Earth's Moon, is home to approximately 400 volcanoes that continuously erupt, contributing to its ...

A new study points to why, and how, Io became the most volcanic body in the solar system. Scientists with NASA’s Juno mission ...

25, 2024 — A new computer model can be used to detect and measure interior oceans on the ice covered moons of Uranus ... one of the few meteorites ... New Solar Composition Ratios That Could ...

The biggest and oldest of these scars is a monster crater, one of the largest, not just on the Moon, but in the entire Solar ...

Here’s how it works. Earth isn't alone in orbiting our sun; it's joined by a bunch of planets, moons, asteroids, and comets that we collectively call our solar system. But how much do you know ...

Weather permitting, Jupiter will not only be brighter than most other stars and planets in the evening sky, but will also be ...

The existence of another watery world in the outer solar system may offer clues to how such seas form — and hope for another spot to search for life ...

Studying these, plus dwarf planet ...

"Discovering liquid water oceans inside the moons of Uranus would transform our thinking about the range of possibilities for where life could exist." The chance of liquid oceans hiding beneath ...