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Science of TRON

Listen to audio from the "Science of TRON" panel, featuring director Joe Kosinski, producer Sean Bailey, and science consultants Sean Carroll & John Dick. Learn More

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Fantasy into Science, or Realizing the Impossible: Interstellar Travel

Some things are impossible because they violate fundamental laws of the universe, as far as we know. The theory of relativity says that neither matter nor information can travel faster than light. Matter because an object reaches infinite mass at the speed of light. (Though the recent measurement of neutrinos apparently traveling faster than light remains to be explained, most physicists suspect it reflects a subtle error, not an overthrow of the theory of relativity.) Information because that would reverse the order of cause and effect for some observers, effectively enabling time travel and violating everything we think we know about how nature operates. Other things are impossible, or at least extremely difficult, because of practical or engineering limitations rather than fundamental ones.

Wormholes: The Superstars of Inter-Stellar Travel

You might not have noticed their stellar performances, but with feature roles in Thor and Green Lantern, wormholes are the biggest movie stars of the summer. Not to mention, without these theoretical shortcuts in space-time, neither film would have much of a plot. A wormhole (the characters call it an “Einstein-Rosen bridge”) in Thor allows the film’s characters to travel between the Nine Realms and in Green Lantern, Hal Jordan travels to Oa through a wormhole (though it’s not mentioned in the film). Without wormholes, neither superhero would have gotten very far – nor would the plot.