Exploring Mars

Scientists have spent a lot of time exploring Mars, so it's one of the planets we know the most about.

They believe it used to look a lot like Earth, with oceans and lakes on its surface.

Today, it's cold and rocky. Through clear diagrams and vivid photographs, readers explore the surface of Mars.

Fun facts that supplement this common science curriculum topic allow readers to feel like space explorers, learning exciting new things about the Red Planet.