EFFECTS OF GENERAL RELATIVITY ON INTERPLANETARY TIME-DELAY MEASUREMENTS
MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB
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The predictions of general relativity regarding interplanetary time- delay measurements are explored in detail. We conclude that a fourth test of the theory is now feasible since the modifications of general relativity introduce on extra delay of about 200 micro sec when radar waves are reflected from either Mercury or Venus near superior conjunction. The uses of such measurements to investigate the solar corona, a possible time dependence of the gravitational constant, and the precession of Mercurys perihelion are also discussed.