TED Talksのインスタグラム(ted) - 8月6日 00時57分

This is the Victoria Crater, a half-mile-wide crater on the surface of Mars. NASA’s Opportunity rover spent nearly a year examining its exposed rock layers and collecting geological information. The rocks revealed evidence that long ago, the Martian landscape was shaped by a wide network of groundwater. See more beautiful images of Mars in our latest from #TEDBooks, “How We’ll Live on Mars” by Stephen Petranek. Learn more at go.ted.com/liveonmars

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• NASA
• simonbooks