Exploring MarsBook - 2007
This planet has a giant volcano three times as tall as Earth's tallest mountain. It has a canyon that would stretch across most of the United States. And it is covered with craters, including an enormous one that is more than 1,200 miles wide. What is this place? It is Mars--the red planet that is Earth's next-door neighbor. Learn amazing facts about Mars in this fast-paced glimpse into the future of science.