Using simple text, maps, and dramatic photographs, this book introduces readers to Mars, relying on the latest scientific findings from NASA and other space agencies. Features include Mars’ physical measurements, its geology, atmosphere, gravity, orbit, and climate. Also covered are geographical wonders such as Valles Marineris (the largest canyon in the solar system) and Olympus Mons (the largest volcano), as well as major craters, icy poles, and Mars’ two moons, Phobos and Deimos. Aligned to Common Core Standards and correlated to state standards. Abdo & Daughters is an imprint of Abdo Publishing, a division of ABDO.