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A test of general relativity using radio links with the Cassini spacecraft

Iess, L.; Tortora, P.; Bertotti, B.

According to general relativity, photons are deflected and delayed by the curvature of space-time produced by any mass. The bending and delay are proportional to γ + 1, where the parameter γ is unity in general relativity but zero in the newtonian model of gravity. The quantity γ - 1 measures the degree to which gravity is not a purely geometric e…