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cosmopot
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What is the first result on Gravity Probe B? Please tell me.
Gravity Probe B (GP-B) is a satellite-based physics experiment launched by NASA in 2004 to test Einstein's theory of general relativity.
The main objective of Gravity Probe B was to measure two key predictions of general relativity: the geodetic effect and frame-dragging.
GP-B used four ultra-precise gyroscopes to measure the tiny changes in the spin axis of the Earth caused by the geodetic effect and frame-dragging.
After 16 months of data collection, GP-B confirmed both the geodetic effect and frame-dragging with an accuracy of 1%. This supported Einstein's theory of general relativity with unprecedented precision.
The results of GP-B have greatly advanced our understanding of gravity and provided further evidence for the validity of Einstein's theory of general relativity. It has also paved the way for future experiments and research in this field.