Five out of the six essential elements required for life on Earth were known to exist on Enceladus. Now the sixth and final one has been found too.

The Milky Way likely has hundreds of millions of planets that are promising targets to probe for signs of life outside our solar system.

Regions on exoplanets called "terminator zones" could be prime sites for liquid water and possibly harbor life, a new study shows.

"...Hansel and Gretel dropped breadcrumbs to make sure they'd find their way back. In our scenario, the 'breadcrumbs' are miniaturized sensors..."

A future mission to Enceladus, one of Saturn's 83 moons, could discover its potential for harboring alien life—all without ever landing.

New telescope allows us to study the atmospheres of planets orbiting stars other than our Sun in unprecedented detail.

We should not rule out taking a closer look at exoplanets that have a poorly oxygenated atmosphere.

Newly discovered microbes may give scientists a blueprint for the kinds of potential life forms that could exist on Mars.