... Where is Venus and how big is it? ... What are Venus's clouds made of? ... Target: Venus ? ... Starting in early May, Venus will be the brilliant "morning star", rising just before the Sun does. ... will "invade" Venus by dropping a number of landers and balloon-carried probes into the planet's cloud-shrouded atmosphere. ... The American Pioneer Venus Orbiter and the two 1983 Soviet Venera spacecraft (see table ) each carry radar instruments which have been mapping Venus's surface through the clouds...