PBS, with more than 330 member stations, offers all Americans the opportunity to experience the worlds of science, history, nature and public affairs; to hear diverse viewpoints; and to take front row seats to world-class drama and performances.

Three ordinary people search for humanity's true place in the cosmos.

Genius by Stephen Hawking

Where Are We?

Self-assembling machines, light-up bacteria and a physical demonstration of evolution revolutionize volunteers' views of life.

What Are We?

PBS national service provided by local public television stations nationwide.

PBSNET

Stephen Hawking challenges three people to ponder the likelihood of alien life.

Are We Alone?

Stephen Hawking considers whether time travel is possible; ideas include DeLoreans, atomic clocks, a giant black hole and a large swath of New York.

Can We Time Travel?

Watch TV Networks, Shows and Movies | DIRECTV

The latest movies and must watch shows!

Watch Peacemaker exclusively on the HBO Max app, included with an HBO Max subscription.

Data/messaging rates may apply for app download/usage. HBO Max subscription required.

Welcome to your ultimate entertainment destination and the Dexter Universe. Watch new episodes of Dexter Resurrection and more all in one network.

Watch exclusive originals like the new psychological thriller The Institute and Hollywood hit movies.

MGM+ is a trademark of Metro-Goldwyn-Mayer Lion Corp. All copyrights, trademarks, and other intellectual property or proprietary rights are the property of their respective owners.

Watch visionary original series like <b>BMF Season 4, Outlander, Power Book III: Raising Kanan,</b> and much more.

Buckle up for Hollywood hits like Barbie and behind-the-scenes exclusives when you add CINEMAX to your current DIRECTV package. 

Stephen Hawking challenges volunteers and viewers to consider some of humanity's greatest questions.

S1 E1 | Can We Time Travel?