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苏联于1984年12月15日和21日发射的维加-1和维加-2,经过长达5亿公里的飞行后,相继飞过金星并分别把一个同温层气球和一个自动着陆舱投放到金星大气层和金星表面。维加-1于1985年6月9日抛出一个直径2米、重2吨的球体,球体于6月11日以11公里/秒的速度进入金星大气层,它再放出一个直径3.4米的气球,将稳定在54公里的高度上。另外,维加-1又把一个自动着陆舱放到金星表面的平原区并工作了21分钟,该地区为金星北纬
The Vega-1 and Vega-2, launched by the Soviet Union on December 15 and 21 December 1984, flew over Venus after a 500-million-kilometer flight and respectively deployed a stratospheric balloon and an automatic landing capsule Placed on the surface of Venus and Venus. Vega-1 thrown a sphere of 2 meters in diameter and 2 tons in weight on June 9, 1985. The sphere entered Venus at 11 km / s on June 11 and released a balloon 3.4 meters in diameter , Will be stable at a height of 54 km. In addition, Vega-1 put an automatic landing capsule into the plains of Venus surface and work for 21 minutes, the area is Venus latitude