The TanDEM-X and TerraSAR-X satellite will fly in formation, occasionally orbiting within just 700 feet of each other, to create the most precise 3D world maps ever made.
If Google starts using this mapping instead of their current satellite photos, perhaps the images will only be two to three years out of date instead of five to ten years like they are now.
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.
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