<human>:  Why did the Mars Rover, Curiosity, land on Mars?
<bot>: It landed on Mars to look for evidence of life. The rover, Curiosity, is a very advanced robot. It was designed to search for signs of life on Mars. The mission team wanted to know whether life could have existed on Mars in the past. They hope to find organic compounds, which are compounds that contain carbon, such as amino acids, sugars, and fats. They also hope to find the building blocks of life, like water and organic carbon.