Science instruments are tools on the rover that will allow scientists to study and learn about the Martian environment. They provide information on landforms, the character of rocks and soils, and past environmental conditions on the red planet.

There are several different kinds of instruments on the twin rovers that will help them explore the environments of their two different landing sites [figure out link]. In a sense, they will act as "robotic geologists," mimicking what human geologists do when they embark on field studies of different terrains here on Earth. The different kinds of instruments the rovers carry are: