An outburst of solar energy looks primed to hit Earth on Thursday, potentially bringing auroras to the northern U.S. on Thanksgiving and Black Friday.

Russian cosmonauts aboard the ISS were forced to seal a hatch and don protective equipment after the arrival of a cargo vessel brought with it a bizarre smell.

Scientists have found microorganisms crawling over a sample retrieved from the 200 million-mile-distant asteroid Ryugu. But they almost certainly came from Earth.

New images show the rapidly rotating pulsar of the "Guitar Nebula" shooting out a gigantic cosmic plume of plasma, X-rays and supercharged particles spinning along a magnetic field line in interstellar space.

The discovery of complex fish trapping networks from 4,000 years ago hint at how the Maya rose up as a civilization in Central America and what is now southern Mexico.

Orcas off the coast of Washington State are balancing dead fish on their heads like it's the 1980s, but researchers still aren't sure why they do it.