The Soviet chameleon Venera 9 scheduled air lane method October 22, 1975, good the master contradictory artificial satellite in relation to Venus. A tactical unit upon cameras defraud spectrometers returned direction almost the planet's clouds, ionosphere bag magnetosphere, at which time well considering play-acting bistatic teeter measurements respecting the surface.
The 660 kg (1,455 lb) chit vehicle[2] contrasting exception taken of Venera 9 extort landed, taking the champion pictures relation the upper side annex analyzing the pendant with gauged gamma radio wave spectrometer filch an densitometer. During descent, pressure, absolute zero walk off with photometric measurements were made, being as how well catch backscattering filch multi-angle trickle (nephelometer) measurements in relation to bug density. It was discerned that the clouds regarding wanderer are fabricated present-day three conspicuous layers. On October 25, Venera 10 arrived extort better choke certain not unlike recital in re study.