We tend to imagine advanced civilizations as empires rooted to worlds, borders, and megastructures. But this episode explores a stranger possibility: the longest-lived cultures in the galaxy may be ...

Astronomer Dr. David Kipping argued that we're more likely to meet a "unusually loud" extraterrestrials whose empire is on the decline. When ET phones home, it could be his last call. Contrary to ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

“There is a silence in the night sky that has bothered me for as long as I can remember.” That line, attributed to Richard Feynman, lands because it gets at a simple, stubborn feeling. The sky looks ...

Neil deGrasse Tyson is an astrophysicist who is the director of the Hayden Planetarium at the American Museum of Natural ...