If you ever travel back in time to hang out with Homo sapiens around 41,000 years ago, pack some sunscreen – or better yet, a ...

"At some point it might not be beneficial anymore to stick around with your buddies. But if you don't, you die." ...

The sun has produced stunning auroras on Earth in recent years as solar activity has peaked—but expect more in coming years ...

These ghostly glows are most visible near the magnetic poles. But thanks to increasing solar activity, they're now appearing farther south and more frequently than usual. Whether you're planning a ...

The National Science Foundation’s Daniel K. Inouye telescope debuted a close-up of the sun captured by its new, ...