Venus is not exactly a hospitable-sounding place. The planet's surface can reach temperatures of 800 degrees Fahrenheit. The atmospheric pressure is close to the psi found in a hydraulic car crusher . None of the landers that touched down there lasted more than an hour. Generally, it's a not a place that sounds very friendly to humans. But that's all on the surface. Just 30 miles up, conditions on Venus become incredibly Earth-like. In fact, the upper atmosphere of Venus is home to the most Earth-like conditions in our entire solar system.