Abstract: Attempts to study the radiowave reflection properties of Venus by radar at 3.8 cm wavelength are reviewed. Measurements made by the Lincoln Laboratory during the last three inferior conjunctions place the scattering cross ...

Abstract: The 6085±10 km radius of Venus deduced from combining observations made with the Venera 4 and Mariner 5 space probes appears to be incompatible with the 6050±5 km radius determined from earth-based radar measurements.