When it comes to the search for life elsewhere in the universe, methane and other chemical compounds are seen as signs of ...

The curious minds at What If explore what would happen if there is alien life on Jupiter's moon Europa.

Does anywhere in the country better represent this era of the American experiment than a self-governing tech-company town ...

Are we alone in the universe? Consider mysterious "extraterrestrial" radio signals. Unexplained gases on other planets.

Here's your chance to live like an astronaut as NASA seeks volunteers to live in a habitat for a year simulating future moon ...