Math & Technology

Topic Image Rail

inset of Mars from Mariner, Curiosity selfie

THEN AND NOW  The first fuzzy image of Mars (inset) from Mariner 4 in 1965 showed hints of clouds. This year, the Curiosity rover snapped a selfie while exploring Gale Crater.

This spore-powered engine is called a "moisture mill." It turns as bacterial spores, attached to the yellow polymer flaps, shrink and swell based on varying levels of humidity.

EXIT THE VEHICLE  A robot called DRC-HUBO, which stands 1.8 meters tall and weighs 80 kilograms, successfully climbed out of a vehicle after driving on a course at the DARPA Robotics Challenge. 

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