Early in our Solar System’s history, bits of icy debris were scattered and then gradually coaxed into a spiral alignment in ...

We don't have to worry about the death of the sun any time soon, but when it does happen, will the Earth be able to survive?

A SpaceX capsule docked at the International Space Station, bringing a replacement crew for Suni Williams and Butch Wilmore to return home after an unexpectedly long stay in orbit.