There is growing evidence for the existence of life on other planets.

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?

An astronomer breaks down 3 key components that allow researchers to make groundbreaking discoveries – and decide when results aren’t significant.

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

Scientists will have to check whether the samples contain living microbes before they can be safely studied.

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

Only 10.2% of astrobiologists disagree with the claim that intelligent aliens likely exist.

Humans may still appear even if the universe were very different. In fact, we may not live in the most likely of possible universes.

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

The mission will investigate the potential for life at the icy moon of Jupiter.