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Gravitational experiments in space: Gravity probe B and STEP

Mester, J. and Buchman, S. and Cruise, A.M. and DeBra, D. and Dittus, H. and Everitt, C.W.F. and Foulon, B. and Keiser, G.M. and Lockerbie, N.A. and Pegrum, C. (2004) Gravitational experiments in space: Gravity probe B and STEP. Nuclear Physics B - Proceedings Supplements, 134. pp. 147-154. ISSN 0920-5632

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Abstract

We describe two space based gravitational physics experiments, the Gravity Probe B Relativity Mission (GPB) and the Satellite Test of the Equivalence Principle (STEP). GP-B will perform precision tests of two independent predictions of general relativity, the geodetic effect and frame dragging. STEP will provide a precision test of a foundation of general relativity, the Equivalence Principle.