Tens of millions of people will travel to see the eclipse, overwhelming local businesses, roads and phone networks. Here’s what to plan for.

SpaceX has landed yet another one of its Falcon 9 rockets after launching the vehicle into space this afternoon. The rocket took off from Cape Canaveral, Florida, at 12:31PM ET, bound for the...

An asteroid named Florence that will safely sweep past Earth on Sept. 1 is the largest object to give our planet a close shave since NASA began tracking these types of near-Earth asteroids, an agency official said.

The well-preserved remains offer a glimpse into the rapidly shifting world that surrounded Naia, a girl who died around 13,000 years ago.

Scientists searching the cosmos for signs of intelligent alien life pick up the only known repeating "fast radio bursts" again and are asking others to tune in too.