Stephen Hawking - Rocket to the Future

Stephen Hawking examines how we may some day, travel to the future.

Into The Universe With Stephen Hawking - Time Travel

This video belongs to Discovery Communications and is being used for educational purposes only

• Category

  Science & Technology

[Ulises Jauregui]

This video made my life.

[Foriao]

He's not an idiot, he just doesn't understand. Instead of yelling at him, why not try to explain?

[scooman]

I don't see the point. Those on the ship could never return to their time. It would be a one way mission for them. After of traveling with the time dilation, in theory, couldn't Earth send a more advanced ship to catch up to them?

[Alaslamalamabad]

how would you deal with outer space debris/asteroids going at that speed though?

[marcoferrara87]

How do you stop?

[moosefactory133]

I understand that if a person walking from the back to the front of the rocket would slow down time enough for their mass they could not exceed the speed of light. I wonder if a laser beam or even a flash light was aimed from the back to the front of the rocket, would the same be true since it has no mass?

[Burtytr]

theoretically it would be

[Burtytr]

Alright my friend allow me to explain. Basically if you are on a spaceship going almost the speed of light and u run from the back of the spaceship to the front, theoretically u would be able to break the speed of light, but we know this is impossible. The answer is that time on the spaceship would slow down RELATIVE to time outside of it (like on Earth). This means that if u go on a spaceship moving that fast, you will age slower, and be younger than you would have been if you stayed on Earth.

[ganievich]

You don't. That's a one way trip. At least until there will be technologies like FTL (Google "warp drive").

[ganievich]

If I'm not mistaken it's from "Into the Universe with Stephen Hawking", Episode 3 "The Story of Everything".

[Debbie Chou]

Mind blowing.

[Kevbilgames]

Is the ship manned?