Our rotating planet’s tug on space-time, known as frame dragging, takes place almost exactly as specified by relativity theory, report Ignazio Ciufolini of the University of Lecce in Italy and Erricos C. Pavlis of the University of Maryland in Baltimore in the Oct. 21 Nature.
The theory predicts that the two satellites LAGEOS and LAGEOS2 should be dragged about 2 meters in the direction of Earth’s rotation as they orbit.
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