Time Travel

Einstein first proposed wormholes in 1935. He co-wrote a paper with Nathan Rosen in which they showed that general relativity allowed for what they called “bridges.” They theorized that there could be places where space/time is folded that allowed transfer of matter from one point to another in the universe.

From http://www.cast.org/images/einstein.jpg

After this initial burst of ideas in the thirties, wormhole theory was pretty much dropped by the world of physics in general. It wasn’t until the 1980’s when Carl Sagan wished to write his book Contact was wormhole theory revisited. Sagan wanted to have his protagonist leave Earth and arrive at a distant star system in a relatively short amount of time without being completely scientifically invalid. He turned to his fellow physicist Kip Thorne to develop an at least somewhat scientifically appropriate method of faster-than-light space travel. Thorne came up with much of the modern framework for wormhole theory that is in existence today for the book, which is now a major motion picture starring Jodi Foster.

From http://wupa.wustl.edu/asmbly/photos/spring2001/thorne.jpg From http://www.astronomija.co.yu/istarija/biografije/sagan/sagan.jpg