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.

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

Planets may form differently around binary stars than they do near loners like our Sun. The finding could lead to new targets in the search for alien life.

Oxygen in an ocean on Jupiter's moon Europa may be similar to oxygen in Earth's oceans. "Our research puts this process into the realm of the possible."

Researchers conclude that only certain types of planets can form moons that are large in respect to their host planets. It could narrow the search for life.

There's methane in gas plumes erupting from Enceladus. Could it be a sign that life could exist in the planet's interior?

An astronomy expert breaks down what he expects from the US government UFO report and whether humans are alone in the universe.

On this podcast episode, a former Harvard astronomer explains why he thinks aliens are more reality than fiction and why we need to be searching for them.