It's called the speed limit of the universe. Einstein blew all of our minds when he worked out the Theory of Relativity, and showed that space and time were malleable substances. He also theorized that we as humans can never travel faster than the speed of light, which leaves the stars and other galaxies almost impossibly out of our reach. But the dreams of Star Wars and Star Trek are not dead. In fact, there could be ways to travel faster than the speed of light - and some of them are already being tested in labs around the world.

More Episodes From...

Through the Wormhole Season 2

# Title Air Date
Through the Wormhole
2:1 Is There Life After Death? Jun 8, 2011
2:2 Is There an Edge to the Universe? Jun 15, 2011
2:3 Does Time Really Exist? Jun 22, 2011
2:4 Are There More than Three Dimensions? Jun 29, 2011
2:5 Is There A Sixth Sense? Jul 6, 2011
2:6 How Does the Universe Work? Jul 13, 2011
2:7 Can We Travel Faster Than Light? Jul 20, 2011
2:8 Can We Live Forever? Jul 27, 2011
2:9 What Do Aliens Look Like? Aug 3, 2011
2:10 Are There Parallel Universes? Sep 4, 2011

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