earth

Escaping helium suggests our world may have formed quickly in a young solar system.

It's really shaped more like a chimney.

Lucky observers in Antarctica—and on the International Space Station—caught the show.

About a quarter of sun-like stars have likely snacked on a rocky planet.

The air we breathe may be the result of a chance collaboration between microbes and the moon.

Even a 1 mile per hour speed boost would make things pretty weird.

The giant teeth can reveal clues about pollutants in the Narwhal's diet.

Bacteria and fungi were hurled into Earth’s middle stratosphere, which resembles many of Mars’ harsh conditions.

A controversial theory suggests that life could pre-date Earth.

Exactly how lucky did we get?