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Date: 2014-01-31 15:56:42 Siberia Tunguska event Astronomy Planetary science Space Meteorite Meteoroid B612 Foundation Near-Earth object Planetary defense Holocene Krasnoyarsk Krai		Add to Reading List Source URL: storyworks.scholastic.com Download Document from Source Website File Size: 1,29 MB Share Document on Facebook

	January 17, 2014 Vital Next Steps in Global Response to the Asteroid Threat Asteroid impacts—an ongoing cosmic and geological process—have dramatically altered the course of life on Earth. A rogue asteroid will certa DocID: 1mLUZ - View Document
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