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Check out the Mars rover these two girls built in their garage VentureBeat

Two sisters, 11 and 13, have built a Mars rover in a workshop in their family’s garage.
Camille and Genevieve Beatty have also been invited to the New York Hall of Science to show off their rover as part of a special exhibit on astronomy. The rover will roam around a mini-Martian landscape and analyze rocks with hidden heat lamps embedded inside.