Other purely geological processes, like oxidation of iron, also release methane. "It's time, it's prudent that we begin to explore Mars looking for the possibility of a life form that's exhaling ...

How would detecting methane help astronomers identify if exoplanets, or even exomoons, have life as we know it ... determine ...

Titan, Saturn's largest moon, is a strange, alien world. Covered in rivers and lakes of liquid methane, icy boulders and ...

Ironically, this layer may make signs of life from the subsurface ocean of ... better understand Titan's carbon cycle, its liquid methane-based "hydrological cycle," and the changing climate ...