Space & Astronomy

Robot Rovers Exploring Mars

An account of how robotic rovers and a small helicopter are exploring the surface of Mars.

B17 min

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1Mars has always interested scientists because it looks a little like Earth.

2It has mountains, valleys, and dry rivers that once carried water.

3Today, robot cars called rovers drive slowly across the red desert.

4The rovers take pictures and study the soil with special tools.

5A radio signal takes several minutes to travel from Earth to Mars.

6Because of this delay, the rovers must make some choices alone.

7One rover found old lake beds where tiny life could have lived.

8Another rover carries a small helicopter that flies in the thin air.

9The helicopter has made many short flights above the dusty ground.

10One day, these robots will help prepare a home for human visitors.

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