text: In paragraph 3, the author speaks about the many difficulties a spacecraft must endure in order to reach the planet. He says, "A thick atmosphere of almost 97 percent carbon dioxide blankets Venus.". He also states that, "On the planets surface, temperatures average over 800 degrees Fahrenheit, and the atmospheric pressure is 90 times greater than what we experience on our own planet." These conditions are much more extreme than anything humans would experience on Earth. The author even talks about how a submarine that dives the deepest depths of the sea, would be crushed by the enviroment.