An expert shares why the atmospheres of distant worlds may hold the key to one of humanity’s oldest questions: Are we alone in the universe?

While Titan could possibly harbor simple, microscopic life, it likely could support only a few pounds of biomass overall, research finds.

Researchers have identified a promising new way to detect alien life on faraway planets.

Life could exist on Mars in shallow meltwater pools below the red planet's icy surface, new research suggests.

Researchers have made a startling discovery: rocks are generating “dark oxygen” in an area being explored for deep-sea mining.

A rocky planet with a large moon may have good potential to host life, given that the moon controls essential aspects for life on Earth.

If life exists on moons orbiting Saturn and Jupiter, instruments headed there in the fall may just need a tiny ice grain to find it.

Sound waves thought to be from a 2014 meteor fireball were almost certainly vibrations from a truck rumbling along a nearby road.

New research explores the links between atmospheric oxygen and detecting alien technology on distant planets.

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