With China's advancing deep space exploration capabilities and critical progress in space-based nuclear power technology, the ...

I’m not sure whether it was elementary school science classes or Fred Flintstone’s Brontosaurus burgers that made the giant ...

You’d think we’d have the solar system pretty well figured out by now. It’s our own cosmic backyard, after all. […] ...

A team of astronomers discovered a strange object in the outer solar system that is in a resonant orbit with Neptune.

An icy object in perfect sync with Neptune reveals new details about planetary migration and unseen bodies far beyond the Kuiper Belt.

This object is the first confirmed body that orbits the sun once for every ten orbits Neptune completes.

In the dark, icy outskirts of our solar system—far beyond Neptune's orbit—astronomers have discovered a cosmic oddball that ...

PHILADELPHIA (AP) - The Philadelphia Phillies restructured their bullpen on Sunday, removing Taijuan Walker from the rotation and recalling right-handed reliever Seth Johnson before their series ...