Got Science?

Anyone curious for ways to time travel? Some ways that I've heard about are:



1. Make an infinitely long spinning cylinder. This cylinder will warp space-time with it, so (I believe) every trip around this cylinder will make you go backwards in time. I don't quite get it, but I read it in a book.

2. From the same book, if you wanted to make a time machine, you could: using negative matter and stuff like that, make two... er... capsules (hard to explain and I read this book a long time ago) and string a wormhole between them (good luck doing that). Then, put one of them on a ship and send that ship zooming off at the speed of light. Time will go differently in each one, and so going in one capsule will send you back in time to the time when it was created (I'm not sure what is which).

3. Going at the speed of light will "stop" time for you, and time slows as you approach the speed of light.

4. Certain drugs will change your perception of time. (i.e. make it seem to speed up/slow down)

5. Life-threatening situations will slow down your perception of time (they did an experiment on it, though I don't quite have the patience now to explain it).

Here are some clips you can watch, and reading the books in this post will also give some more ways. The website that I had hinted at earlier was www.livescience.com, which would have given you some good answers (and possibly some extra credit points!)

EDIT: Congrats to Saffire Goldstone for having the best answer to the first ever question box! And providing wonderful links to articles and videos about time travel. Check it out!