Is intelligent alien life really out there? With powerful telescopes identifying more potentially habitable planets each year, the possibility continues to grow. But what would happen if we actually ...

Earth’s oceans sparked life—but on distant moons and exoplanets, alien seas may be doing the same. Here’s what they might ...

Imagine a planet twice as wide as Earth, covered in an ocean that smells like sweet cabbage. Every day, a faint red star warms this ocean world and the uncountable masses of hungry, plankton-like ...