Quasar & SpaceTime

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Image of Quasar & Blackhole by Barron Storey @ Picture gallery: Art work

Gravity Probe B and space-time

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.

Gravity Probe B is among the most thoroughly researched programs ever undertaken by NASA. This is the story of a scientific quest in which physicists and engineers have collaborated closely over many years. Inspired by their quest, they have invented a whole range of new technologies -- technologies that are already enlivening other branches of science and engineering.

More on Gravity Probe B
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"Ptolemy invented a universe and it lasted two thousand years. Newton invented a universe and it lasted two hundred years. Now Dr Einstein has invented a universe and no one knows how long this one is going to last" - George Bernard Shaw (1930)
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Testing Einstein's Universe by Plato
Finiteness of String Theory and Mandelstam by Plato
Book-cover physics by Stefan Scherer @ Backreaction
Observatories view supernova remnant n49 @ Universe Today
Measuring the shape of supernovae explosions @ Universe Today
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We are moved through space and time by extraordinary forces
We are but a few atoms bound precariously together for a short time
We may use these atoms & molecules to dance our way thru the day
Energised we are transformed - sometimes from starburst to sunray

Here's Wishing you all a mighty fine weekend - Quasar9
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Magical Mosaics from Mary @ getit4yourself
Charmed Cosmic Poetry from Sojourner Space
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Contest announcement from>>> Ghost Particle
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