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TC4: How NASA Plans to Test its Planetary Defense Systems on Close-Approach Asteroid

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opednews.com Headlined to H4 10/7/17

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From nasasearch.nasa.gov: NASA and FEMA Conduct Asteroid Impact Emergency Planning Exercise {MID-173182}
NASA and FEMA Conduct Asteroid Impact Emergency Planning Exercise
(Image by NASA)
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Paul Chodas from NASA’s CNEOS says the exercise will be the same as if the asteroid were on course to hit Earth.

A network of astronomers will be tracking TC4. You want to know early on the composition and the size. We have a rough idea of its size from its brightness in optical wavelengths but we have to make an assumption on its reflectivity. Dark asteroids are known to have low densities, and bright asteroids are known to have rockier, higher densities.

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Born in Long Island public school year in Sweden as exchange student, went to Harvard one year, Cooper Union in NYC as Art student. Have two children, one of whom is rock mogul, the other has three daughters, one of whom has two daughters, making me (more...)
 

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