Eventually, we'll launch a mission dedicated solely to studying an interstellar object. When that day comes, which one should ...

Two worlds at almost opposite ends of the Solar System have just given us a mystery we didn't even know existed.

In virtual experiments, AI repeatedly misread dead digital organisms as self-replicating life.

A microscopic, nearly indestructible creature known as the tardigrade has survived the vacuum of space, sub-zero cold, and ...