Astronaut

Bacteria on the International Space Station are evolving and changing in the strange orbital environment. But they don't seem to be any more dangerous to humans.

Here's what those wriggling worms are expected to do in space ... and it's not to scare aliens.

Astronaut Harrison Schmitt saw Earth from space, but doesn't see that human activity is shaping climate change.

There are plenty of challenges to putting people on Mars, whether you look at the rocket, the astronaut or the planet itself.

Hurricane Florence, the vast storm meteorologists and astronauts alike have been tracking, made landfall this morning (Sept. 14) near Wrightsville Beach, North Carolina.

Government weather satellites are watching closely as a massive storm called Hurricane Lane threatens Hawaii.

Astronauts aboard the International Space Station have taken dramatic new photos of the fires that are blackening huge swaths of the Golden State and throwing off smoke that billows far to the east.

Would you pay $50,000 for a Bible that flew to the moon?

Why did the moon see a sudden temperature spike in the '70s? Blame astronaut footprints.

Every time that space crews launch from the Baikonur Cosmodrome in Kazakhstan, they literally follow in the footsteps of the first human in space – Yuri Gagarin.