Gravitational redshift test of EEP with RadioAstron from near Earth to the distance of the Moon
Gravitational redshift test of EEP with RadioAstron from near Earth to the distance of the Moon
The Einstein Equivalence Principle (EEP) is a cornerstone of general relativity and predicts the existence of gravitational redshift. We report on new results of measuring this shift with RadioAstron (RA), a space VLBI spacecraft launched into an evolving high eccentricity orbit around Earth with geocentric distances reaching 353,000 km. The …