Follow the space program since the moon landing in the four-part documentary "Once Upon a Time in Space". Here’s how to watch ...

You probably know the paradox about "Johnny B. Goode," but did you know the guitar Back to the Future's Marty McFly (Michael ...

In 2009, Stephen Hawking threw a party for the ages, inviting time travelers from all around to congregate at his house to ...

NASHVILLE, Tenn. (AP) — Marty McFly grabbed a guitar in “Back to the Future” and rocked out with the band at a 1950s high school dance, helping him narrowly avoid blinking out of existence before time ...

What does it mean to be to space-time? The seemingly simple question gets to the essence of twentieth-century physics and has driven a hundred-year debate between philosophy and science. In Einstein’s ...