Solar System: Mars

"Mars is one of the planets that orbit, or travel around, the sun in the solar system. It is the fourth planet from the sun..."

"Fourth planet in the solar system in order of distance from the Sun and seventh in size and mass. It is a periodically conspicuous reddish object in the night sky. Mars is designated by the symbol ♂..."

"Mars is a dusty, cold, desert world with a very thin atmosphere. There is strong evidence Mars was—billions of years ago—wetter and warmer, with a thicker atmosphere..."

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.