text: The author explains why scientist strive to study venus. Venus is refered to as Earth's "Twin" because it is closest to us in terms of distance and size and density. Scientist want to study it because, "the planet has a surface of roky sediment and includes familiar features such as valleys, mountains, and craters. This simular characteristics facinate scientis. Scientist want to find a way to reach Venus inorder to study it Earth like characteristics.