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101 0 $aeng
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181   $ctxt
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183   $acr
200 10$aNear-earth object surveys and hazard mitigation strategies $einterim report /$fCommittee to Review Near-Earth Object Surveys and Hazard Mitigation Strategies, Space Studies Board, Aeronautics and Space Engineering Board, Division on Engineering and Physical Sciences, National Research Council
205   $a1st ed.
210   $aWashington, D. C. $cNational Academies Press$dc2009
215   $a1 online resource (41 p.)
300   $aDescription based upon print version of record.
311 08$a0-309-14361-6 
327   $a""Front Matter""; ""Preface""; ""Acknowledgments""; ""Contents""; ""Interim Report on Near-Earth Object Surveys and Hazard Mitigation Strategies""; ""Appendixes""; ""Appendix A: Letter of Request""; ""Appendix B: Statement of Task""; ""Appendix C: Committee and Staff Biographical Information""
330   $aThe United States is currently the only country with an active, government-sponsored effort to detect and track potentially hazardous near-Earth objects (NEOs). Congress has mandated that NASA detect and track 90 percent of NEOs that are 1 kilometer in diameter or larger. These objects represent a great potential hazard to life on Earth and could cause global destruction. NASA is close to accomplishing this goal. Congress has more recently mandated that by 2020 NASA should detect and track 90 percent of NEOs that are 140 meters in diameter or larger, a category of objects that is generally recognized to represent a very significant threat to life on Earth if they strike in or near urban areas. Achieving this goal may require the building of one or more additional observatories, possibly including a space-based observatory.  Congress directed NASA to ask the National Research Council to review NASA's near-Earth object programs. This interim report addresses some of the issues associated with the survey and detection of NEOs. The final report will contain findings and recommendations for survey and detection, characterization, and mitigation of near-Earth objects based on an integrated assessment of the problem.
606   $aNear-Earth objects
606   $aAsteroids
606   $aHazard mitigation
615  0$aNear-Earth objects.
615  0$aAsteroids.
615  0$aHazard mitigation.
676   $a523.5
712 02$aNational Research Council (U.S.).$bCommittee to Review Near-Earth Object Surveys and Hazard Mitigation Strategies.
712 02$aNational Research Council (U.S.).$bSpace Studies Board.
712 02$aNational Research Council (U.S.).$bAeronautics and Space Engineering Board.
712 02$aNational Research Council (U.S.).$bDivision on Engineering and Physical Sciences.
712 02$aUnited States.$bNational Aeronautics and Space Administration.
801  0$bMiAaPQ
801  1$bMiAaPQ
801  2$bMiAaPQ
906   $aBOOK
912   $a9910963965803321
996   $aNear-earth object surveys and hazard mitigation strategies$94474165
997   $aUNINA