The sound of a rover riding over a jagged Martian rock is similar to the racket of slowly crunching soda cans. How do we know? NASA engineers have rolled wheels across terrains similar to those that ...
A tiny visitor to Mars last week ventured off its landing pad and sank its six wheels into the planet’s rust-colored dirt. This week, Spirit, the rover that NASA landed on Mars on Jan. 3 (SN: 1/10/04, ...
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