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explorers


(ek-SPLOR-erz)

People who travel and look around to find out what a new place is like.

explorers

planets


(PLAN-itz)

Our solar system has eight planets. They circle around the sun. Earth is a planet.

  planets

robots


(ROH-bahtz)

Machines that do jobs that would otherwise be done by people. This robot is exploring Mars.

  robots
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