December 15, 1970, "Venus No. 7" entered the Venus atmosphere, launched 2.5 m2 parachutes at a height of 60 kilometers, the purpose to be safe landing. After six minutes, the parachute was broken. After twenty-nine minutes, the detector hit into a Venus surface at a speed of about 60 km / h. 
"Venus No. 7" has experienced an impact and even passed a second information in full signal before the fault occurred. However, the computer processing of the radio signal was later indicated that the "Venus No. 7" detector continued to send a weak signal within 23 minutes after the impact. The returned data shows that the surface temperature is about 475 ° C (878 ° F), the pressure is 92 bar, the pressure is 92 times the earth, and the wind speed is 2.5 m (5.6 mph) per second. Become a detector that passes back to Venus internal data.
After that, the former Soviet Union successively launched nine Venus detectors.