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![]() Date: 2012-09-09 17:17:24Planetary defense Comets Asteroids Asteroid-impact avoidance Deep Impact Impact event Kreutz Sungrazers Asteroid 73P/Schwassmann–Wachmann Astronomy Space Solar System | Add to Reading List |
![]() | Water vs. Rocks Resources for Earth or Michael F. A’HearnSaturday, November 20, 2010DocID: 13gxf - View Document |
![]() | Michael L. Sitko Space Science Institute 4750 Walnut Street, Suite 205, Boulder, COCorporate OfficePaxton Avenue, Cincinnati, OHCincinnati Office) InstitutionsDocID: 12eKs - View Document |
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![]() | HEIC0718: EMBARGOED UNTIL 15:00 (CET)/9:00 AM EST 15 November, 2007 http://www.spacetelescope.org/news/html/heic0718.html Photo release: Hubble zooms in on heart of mystery comet 15-November-2007 The NASA/ESA Hubble SpacDocID: Flbl - View Document |
![]() | Article from Meteorite Quarterly: November 2006, 12(4), 17 – 19 The Problem of Ice Meteorites Martin Beech Campion College, The University of Regina, Regina, SK.DocID: CBtZ - View Document |