PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE
↓ More info below ↓

Sign Up on Patreon to get access to the Space Time Discord!
https://www.patreon.com/pbsspacetime

Check out the Space Time Merch Store
https://pbsspacetime.com/

Invitation to Time Travelers: https://www.youtube.com/post/UgzeIA0O00-bVioxU4t4AaABCQ

Time travel stories are cool because both the past and future are somehow more interesting that the present and because everyone wants a redo. But so far it appears we’re doomed to live consumed by regret in the eternal, boring present. Time marches on, inexorably and only forward. Or so we thought until Einstein came along. His special and general theories of relativity changed the way we think about time forever, and believe it or not, their raw equations permit time travel. They even tell us how to do it. So let’s review the possibilities, and decide how possible they really are.

Hosted by Matt O'Dowd
Written by Matt O'Dowd
Graphics by Leonardo Scholzer & Adriano Leal
Directed by: Andrew Kornhaber
Executive Producers: Eric Brown & Andrew Kornhaber

End Credits Music by J.R.S. Schattenberg: https://www.youtube.com/channel/UCRl6-nb4iOnsij-vnpAjp0Q

Special Thanks to our Big Bang Supporters

Big Bang
Alexander Tamas
Craig Stonaha
David Barnholdt
David Nicklas
Fabrice Eap
John S
Juan Benet
matt miller
Morgan Hough

Quasar
Mark Heising
Mark Rosenthal
Vinnie Falco

Hypernova
chuck zegar
Danton Spivey
Donal Botkin
Edmund Fokschaner
Hank S
joe pearce
John Hofmann
John R. Slavik
Jordan Young
Joseph Salomone
Mathew
Matthew O'Connor
Syed Ansar

Gamma Ray Burst
A G
Adrien Molyneux
AlecZero
Andreas Nautsch
Bradley Jenkins
Brandon labonte
Brian
Dan Warren
Daniel Lyons
David Bethala
DFaulk
Frederic Simon
Geoffrey Short
Graydon Goss
Greg Smith
James Flowers
Jamie Frederick
John Funai
John Griffith
John Michael Kerr
John Pollock
John Robinson
Jonathan Nesfeder
Joseph Dillman
Josh Thomas
Kevin Lee
Kevin Warne
Kyle Hofer
Malte Ubl
Michael Conroy
Nick Virtue
Nick Wright
Paul Rose
Scott Gossett
Sean Warniaha
Tatiana Vorovchenko
Tim Stephani
Tonyface
Yurii Konovaliuk