This title covers the U.S. robotic rover missions on Mars. Through simple text, maps, and stunning photography, readers will learn about the Pathfinder, Spirit, Opportunity, and Curiosity rovers. Planned future missions from the U.S. and other countries will also be explored. Aligned to Common Core Standards and correlated to state standards. Abdo & Daughters is an imprint of Abdo Publishing, a division of ABDO.