![Mountain View / California / Government of the United States / NASA / Near-Earth object / Potentially hazardous object / Ames Research Center / Centennial Challenges / Hubble Space Telescope / NASA Research Park / Spaceflight / Space / Planetary defense Mountain View / California / Government of the United States / NASA / Near-Earth object / Potentially hazardous object / Ames Research Center / Centennial Challenges / Hubble Space Telescope / NASA Research Park / Spaceflight / Space / Planetary defense](https://www.pdfsearch.io/img/f6964f3f604322d993958a5db479efd3.jpg) Date: 2013-07-28 13:19:55Mountain View California Government of the United States NASA Near-Earth object Potentially hazardous object Ames Research Center Centennial Challenges Hubble Space Telescope NASA Research Park Spaceflight Space Planetary defense | | National Aeronautics and Space Administration NASA anticipated the close flyby of asteroid 2012 DA14 on February 15, 2013, but the asteroid explosion above Chelyabinsk, Russia that same day was unexpected. With over 1,0Add to Reading ListSource URL: www.nasa.govDownload Document from Source Website File Size: 430,34 KBShare Document on Facebook
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