Publication Details

AFRICAN RESEARCH NEXUS

SHINING A SPOTLIGHT ON AFRICAN RESEARCH

physics and astronomy

The Gravity Probe B test of general relativity

Classical and Quantum Gravity, Volume 32, No. 22, Article 224001, Year 2015

The Gravity Probe B mission provided two new quantitative tests of Einstein's theory of gravity, general relativity (GR), by cryogenic gyroscopes in Earth's orbit. Data from four gyroscopes gave a geodetic drift-rate of -6601.8 ±18.3 marc-s yr-1 and a frame-dragging of -37.2 ±7.2 marc-s yr-1, to be compared with GR predictions of -6606.1 and -39.2 marc-s yr-1 (1 marc-s = 4.848 ×10-9 radians). The present paper introduces the science, engineering, data analysis, and heritage of Gravity Probe B, detailed in the accompanying 20 CQG papers.

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Citations: 97
Authors: 95
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Study Approach
Quantitative