Science Casts : Space-time Vortex
A Space time Vortex Around Earth - Presented by Science @ NASA
Would you believe Earth sits in the middle of a space-time vortex?
Einstein predicted this almost a hundred years ago, and it turns out to be true.
On May 4th, 2011, researchers announced that NASA's Gravity Probe B spacecraft
has detected the vortex and its shape precisely matches the predictions of
Einstein's theory of gravity. "The space-time around Earth appears to be
distorted just as general relatively predicts." says Stanford University
physicist Francis Everitt.
principal investigator of the Gravity Probe B mission.
Time and space, according to Einstein's theories of relativity are woven
together, forming a four-dimensional fabric called "Space-time." The mass of
Earth dimples this fabric, much like a person sitting in the middle of a
trampoline. If Earth were stationary, that would be the end of the story.
But our planet spins, and the spin should pull the dimple around into a four
dimentional swirl. (not end yet, but I am tired)
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