NASA's next Mars rover, Curiosity, will take a next generation "hands-on" look at rocks and soils to determine the chemical makeup near its landing zone. Bill Nye gives us an idea of how big it must be to do the work of astronauts on Mars.
Bill Nye The Science Guy responds to science questions submitted by students. In this video, Bill responds to the question "Why is the Mars Curiosity Rover so big?"
Learn the basics about Curiosity and what NASA has planned for the rover.