To the disbelief of many, Harvard astrophysicist John Brandenburg believes that intelligent life once existed on Mars and was ...

Harvard astrophysicist John Brandenburg believes life once existed on Mars and was destroyed by a nuclear war. His theory, ...

A team of astronomers claims to have sniffed out a “biosignature” in the atmosphere of a distant planet called K2-18b. But ...

Imagine waking up one morning to the realization that everything you know—the sky, the trees, even the people you love—might ...