New research suggests that many planets previously considered promising for life may, in fact, be far less hospitable. A ...

Aristotle believed the planets revolved around Earth and God could not have created other worlds. Today, scientists scour the ...

While scouring a 50-million-year-old crater on Mars, the Curiosity rover stumbled upon a polygon-shaped pattern that sort of ...

From lava tubes on Mars to ice pockets on Europa, subterranean environments may offer the best chance of finding life—and ...