The Soviet Rovers that Died on Mars

Before Curiosity took selfies and Opportunity rolled a marathon, rovers on Mars were more modest. Sojourner, NASA’s first rover, was a microwave-sized robot designed to last just seven days, and more than two decades earlier the Soviet Prop M rovers were tiny little squat boxes that reached the red planet for a ski vacation. 
Mars 2 and Mars 3 were twin missions launched to the red planet in 1971,May 19 and May 28 respectively. Both were landers designed such that petals protecting the payloa

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