Mercury

 We care about Mercury because there maybe something on Mercury that we need or could use to help us on earth. Scientists hope to learn the operations they need to perform on the MESSENGER spacecraft. We also care about studying Mercury because it could have valuable resources or natural gases or even gold. They also hope to learn why Mercury shrunk. In recent studies scientists have agreed that Mercury has shrunken. Over many years, astronomers have figured out that under Mercury’s rocky surface has a thick layer or “mantle” which is hot liquid material,or molten rock.

I think the U.S shouldn't spend any money for traveling in space.  We should spend the little money we have more important things like finding a cure for cancer or buying food for starving people.  We shouldn't even study any other planets because it is a huge waste of money, when we could be using it for more important things.