Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Venera 10 (Russian: ¿¿¿¿¿¿-10) was a USSR unmanned space mission to Venus. It consisted of an orbiter and a lander. It launched on June 14, 1975 03:00:31 UTC. The orbiter entered Venus orbit on October 23, 1975. Its mission was to serve as a communications relay for the lander and to explore cloud layers and atmospheric parameters with several instruments and experiments: 1.6-2.8 ¿m IR Spectrometer, 8-28 ¿m IR Radiometer