NASA’s Lucy spacecraft captures asteroid Donaldjohanson, marking a new step in its mission to explore the solar system’s ...

If you thought planets only circled stars in neat, flat disks, think again. Scientists have uncovered compelling evidence for ...

With its beautiful rings, Saturn may be the most stunning planet in the solar system. It is the sixth planet from the sun and ...

The planet is "crumbling to pieces," shedding the equivalent of Mount Everest’s mass every 30.5-hour orbit and will be ...

MIT astronomers estimate a planet 140 light-years from Earth may disintegrate fully within the next 1 to 2 million years.

It would take 120 years to travel to planet K2-18b at the speed of light. Here's how we know what could lie there.

Once the quirky underdog of our solar system, Pluto held planetary status until 2006, when it got a cosmic demotion that still stings space fans. Discovered in 1930, Pluto was the ninth planet for ...