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Satellites Spot Imminent Natural Disasters
Sept. 9, 2010 -- One spacecraft will use radar to look for telltale signs of imminent disaster as it precisely measures small deformations in Earth's surface over time. The second satellite will be equipped with an optical remote sensing tool that will pulse laser light on Earth and measures the time it takes for the reflected signals to return. The technique is good for measuring the density of a forest, for example. Read More
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