Curiosity celebrates 10 years on Mars
Mars is a world entirely populated by robots: Orbiters and landers from a half-dozen space agencies scout its wafer-thin atmosphere and stark surface to unveil a surprisingly active past. On the ground, a hardy six-wheeled rover named Curiosity observed its 10th anniversary on the Red Planet this summer. Dust-streaked and running on punctured wheels, it continues to explore a desiccated landscape of wind-chiseled mesas, isolated buttes, and swirling sands for relics of a warmer, wetter, perhaps habitable Mars.
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