Status of Planetary Astronomy

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Date: 2012-06-14 19:41:50 Near-Earth objects Spaceflight Asteroid-impact avoidance Asteroids Arecibo Observatory Spaceguard 99942 Apophis NASA Space debris Space Planetary science Planetary defense		Status of Planetary Astronomy Add to Reading List Source URL: neo.jpl.nasa.gov Download Document from Source Website File Size: 1,38 MB Share Document on Facebook

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