Title: Mars Author(s): Linda T. Elkins-Tanton Pages: 206 Publisher: Facts On File, Inc. Publication date: 2006 Language: English Format: PDF ISBN-10: 0816051984 ISBN-13: Description: Mars discusses the fundamental facts concerning this mysterious planet, including its mass, size, and atmosphere, as well as the various missions that have helped planetary scientists document its geological history. This volume also describes Mars' seasons, including their surface effects on the planet and how they have changed over time, as well as what is known and inferred about the composition and structure of the interior of Mars.