If the universe as we know it started with the Big Bang, will it also have an end? And if it’s going to end someday - how? Discover the four main ideas about how the universe might end, and find out which one has the most evidence supporting it. With host Athena Brensberger, dive into our universe's very distant future in this episode of What the Physics?!

If the universe as we know it started with the Big Bang, will it also have an end? And if it’s going to end someday - how? Here are four leading ideas.

4 Ways the Universe Could End

It’s an age-old question: Do aliens exist? And what are the odds we’ll make contact? A famous mathematical equation, known as the Drake Equation, helps scientists estimate the odds of finding intelligent alien civilizations, but new discoveries and unknown factors could change everything.

The Drake Equation helps scientists estimate the odds of finding intelligent alien civilizations.

Do Aliens Exist? This Famous Equation Offers a Clue

Imagine taking an elevator to space. Or blasting off in a nuclear rocket. That might sound like science fiction, but scientists are racing to develop new, more efficient methods of space travel - and some pretty wild ideas are on the table. Discover the rocket-less future of space travel and the quest to make it happen.

Space elevators? Nuclear rockets? The future of space travel could look radically different.

The Rocket-Less Future of Space Travel

The Gordon and Betty Moore Foundation

What the Physics?!, a YouTube series from NOVA, explores mind-blowing ideas and questions from the world of physics like space travel via elevator, the odds that aliens exist, and the ultimate fate of the universe!

What the Physics?!

About .cls-1 { fill: #fff; } .cls-2 { fill: none; stroke: #fff; stroke-linecap: round; stroke-linejoin: round; stroke-width: 8px; }

About