
Batteries power the current design, but liquid-oxygen and liquid-hydrogen fuel cells—no batteries to run out of power—could replace them in the future. The wheels will rotate 360 degrees, allowing the platform to travel in any direction. The only extraneous part of the design is the gold color, from ano-dized aluminum, added for retro flair. A more suitable (albeit pricier) metal, such as gold foil, will provide thermal protection when the rover goes into operation.
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Science is reinventing play, from extreme sports to gamification to ridiculous roller coasters to the playgrounds of tomorrow, and this issue is chock full of fun. Also, on a less fun note: Did global warming destroy my hometown?