NASA has sent robots to Mars before, but none of them have been like this.
Curiosity, the biggest and most advanced Mars Rover, will launch this weekend. After an eight-month trip to Mars, it will spend two years roaming the surface of the red planet, conducting 10 science experiments that will help determine if Mars has ever been suitable for life.
Curiosity is the third Mars Rover. It is twice as long and five times as heavy as the first two: Spirit and Opportunity.
Curious about Curiosity? Read more here.