Solar System

A new study implies that in the past, moons in our solar system may have had rings just like planets do — deepening the mystery of why no ringed moons exist today.

Computer modeling suggests Saturn's rings are billions of years older than previous research suggests — but the new findings are up for debate.

A pair of massive thunderstorms have been spotted swirling in Jupiter's "South Equatorial Belt" and are likely unleashing massive bolts of green lightning. Some experts think the pale clouds could end up altering the rusty band's color — and potentially even making it "disappear."

A new study reveals that the asteroid 2024 PT5, which has been orbiting Earth for 2 months, may have a "lunar origin." However, it is about to break free from our planet, making it tricky to tell for sure.

A 3D map of our cosmic neighborhood has revealed hot and cold regions as well as an "escape tunnel" from our local bubble.

Pluto was demoted from a planet to a dwarf planet in 2006. So why is its status still so controversial today?

How old is Earth? Our planet's age is known from a variety of sources, from rocks on our own planet to ones from the moon.

In the coming weeks, NASA's Europa Clipper will take off on a long journey to Jupiter's moon Europa. The icy moon could potentially host alien life — and there's only one way to find out.

The moon's distance from Earth changes depending on where it is in its elliptical orbit.