"Curiosity's real name is Mars Science Laboratory, and it's useful to keep that in mind. It’s not just some golf cart tooling around the planet; it's a fully functional science lab, with cameras, spectroscopes, sampling devices, and more. Everything it does is so we can learn more about Mars. What's the the history of the planet? Why is its geology the way it is? What's the deal with it used to having water? Where'd it all go?"