Learn More
Gravity Probe B, launched 20 April 2004, is a space experiment testing two fundamental predictions of Einstein's theory of general relativity (GR), the geodetic and frame-dragging effects, by means of cryogenic gyroscopes in Earth orbit. Data collection started 28 August 2004 and ended 14 August 2005. Analysis of the data from all four gyroscopes results in(More)
The Gravity Probe B satellite, which uses ultra-stable electrostatically suspended gyroscopes as an experimental test of General Relativity, was flown in 2004-5. Support forces on the gyroscopes must be minimized or they become a significant source of torques which may corrupt the experimental results. Placing the gyroscopes in an orbital environment is the(More)
The Gravity Probe B (GP-B) Relativity Mission is a fundamental physics experiment to test Einstein's theory of General Relativity based on observations of spinning gyroscopes onboard a satellite in a near-polar, near-circular orbit at an altitude of about 640 km around the Earth. The GP-B mission was designed to test two predictions of Einstein's theory,(More)
  • 1