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sciroccokid
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I know other experiments have brought back conclusive evidence on frame dragging, but has gravity probe B? Links welcome!
pervect said:Try http://einstein.stanford.edu/highlights/status1.html
I think that the result could be described as a very weak, uncertain, confirmation.
The Gravity Probe B mission is a NASA space experiment that was launched in 2004 to test two key predictions of Einstein's theory of general relativity: the geodetic effect and frame dragging.
Frame dragging is a phenomenon predicted by Einstein's theory of general relativity, where a massive rotating object, such as Earth, can drag and twist the fabric of spacetime around it.
Yes, the Gravity Probe B mission has provided strong evidence for frame dragging. The experiment measured subtle changes in the orientation of gyroscopes orbiting Earth, which were consistent with the predicted frame dragging effect.
The Gravity Probe B mission used four gyroscopes, each about the size of a ping-pong ball, to measure the orientation of space around Earth. The gyroscopes were placed in a near-perfect orbit around Earth and their orientations were measured using a telescope and a star tracker. The results showed a small but measurable change in the orientation of the gyroscopes, providing evidence for frame dragging.
The confirmation of frame dragging provides further evidence for the validity of Einstein's theory of general relativity, which is a cornerstone of modern physics. It also has implications for our understanding of gravity and the behavior of massive objects in the universe.