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| Gravity Probe B - Testing Earth's Effect on Spacetime |
| Gravity Probe B is the relativity gyroscope experiment being developed by NASA and Stanford University to test two extraordinary, unverified predictions of Albert Einstein's general theory of relativity.
The experiment will check, very precisely, tiny changes in the direction of spin of four gyroscopes contained in an Earth satellite orbiting at 400-mile altitude directly over the poles. So free are the gyroscopes from disturbance that they will provide an almost perfect space-time reference system. They will measure how space and time are warped by the presence of the Earth, and, more profoundly, how the Earth's rotation drags space-time around with it. These effects, though small for the Earth, have far-reaching implications for the nature of matter and the structure of the Universe.
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| Black Holes |
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Information on Black Holes and research from Cambridge University.
Click Here for More Info |
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| Gravitational Lensing |
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The Optical Gravitational Lensing Experiment.
Click Here for More Info |
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| General Astronomy |
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Space.com
Click Here for More Info
Sky and Telescope's Site
The One and Only - Doc Stanford's Website
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[ Edmund Mao 2005 ] |
