On Saturday, NASA will be launching the new rover "Curiosity," also known as Mars Science Laboratory. The mission is meant to examine chemical ingredients to see if the planet can support human life. The spacecraft will explore a crater the size of a large lake. Curiosity is delivering a rover equipped to test if there is methane in the air. This could be a key sign that the "Red Planet" may be able to support life. Astrophysicist Neil deGrasse Tyson is the director of the Hayden Planetarium at the American Museum of Natural History and host of Star Talk Radio. He discusses what a Mars mission would look like.