text: Venus is the sister planet to Earth. This is becuase Venus is the closest planet to Earths density, size, and ocassionally the closest in distance depending on the orbit. Since the planets are so similar you'd think the conditions would be as well. In the article the author describes the conditions as, " far more extreme than anything humans encounter on Earth." The other then goes on to explain that the thick atmosphere of Venus is almost 97 percent of carbon dioxide. To make things more understandable he also adds the challenge of the highly corrosive sulfuric acid in the planets atmosphere. Not only this, but the temperatures average is over 800 degrees fahrenheit, and the atmospheric pressure is 90 times greater than on Earth. As you can see the conditions of Venus are very extreme based off of the information in the text. These conditions make it very hard to study Venus due to the fact that it's conditions are too extreme for us to get close enough too.