Why Should We Go to Mars?

Some people don’t like the idea of spending billions of dollars to investigate another planet, but there are a few reasons for exploring Mars. Some scientists are curious about whether there was ever life on Mars in the past, and the only way to know that is to look for it there. If anything lived on Mars in the past, scientists might be able to find evidence of it in Martian rocks, just like our own fossil record. Exploring Mars might also provide clues about the solar system and universe in general.