Scientists Speculate on Top-Secret Mars Rover Discovery

SPACE.com
Scientists Speculate on Top-Secret Mars Rover Discovery
Bite-marks on Mars. NASA’s Mars rover Curiosity used a mechanism on its robotic arm to dig up five scoopfuls of material from a patch of dusty sand called “Rocknest.” Each of the pits is about 2 inches (5 centimeters) wide. A sample from that
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