Why are scientists so interested in Mars?
Nasa's Curiosity rover is the latest in a string of robots we've sent to explore the surface of Mars. But what's it actually looking for?
Find out about Curiosity's mission with the special Newsround Guide
Nasa's Curiosity rover is the latest in a string of robots we've sent to explore the surface of Mars. But what's it actually looking for?
Find out about Curiosity's mission with the special Newsround Guide