LA TIMES– Imagine that you’re a science-fiction writer on a tight schedule. You’d like
to play in the vast expanses of the universe, but you have too much scientific
integrity to conjure up a warp drive or a DeLorean out of thin air.
You’re also
concerned that your audience would get bored in the thousands of years that it
would take for a spaceship to realistically travel the distances between stars.
What you really need is a wormhole — a shortcut through time and space. Best of
all, unlike most science-fiction tropes, wormholes might very well be real.
Seventy-five years ago today, Albert Einstein and his collaborator, Nathan
Rosen, submitted a paper to the Physical Review with the goal of unifying
gravity and electromagnetism. Although they failed to discover a theory of
everything, they did something arguably more much important: By creating the
first theoretical model of a wormhole, Einstein and Rosen allowed
science-fiction writers — including Arthur C. Clarke, Madeleine L’Engle and the
writers of “Babylon 5″ and “Doctor Who” — to explore vast
stretches of space and time in the blink of an eye.
From the outside, an Einstein-Rosen bridge, as wormholes were originally
known, looks a lot like its cousin, the black hole. And I risk having my
official Physics Badge revoked if I don’t tell you, ideally in a spooky voice,
that “nothing can escape from a black hole — not even light.”
Continue reading about Time Travel? Maybe.
© 2010, Los Angeles Times
Photo by flickr user Uberto
Dave Goldberg is the author, with Jeff Blomquist, of “A User’s Guide to the Universe: Surviving the Perils of Black Holes, Time Paradoxes, and Quantum Uncertainty.” He is an associate professor of Physics at Drexel University. His Web site is usersguidetotheuniverse.com.