Objek dekat Bumi: Perbezaan antara semakan

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Dicipta dengan menterjemah laman "Near-Earth object"
 
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Peranan penting objek-objek ini dalam mengubah geologi dan biologi Bumi secara ketara saat [[Kejadian hentaman|berhentaman]]<ref name="BROWN02">{{Cite news|url=http://www.sciencenews.org/pages/sn_arc97/75th/rm_essay.htm|title=The Call of Catastrophes|last=Richard Monastersky|date=March 1, 1997|access-date=2017-11-09|archive-url=https://web.archive.org/web/20040313165341/http://www.sciencenews.org/pages/sn_arc97/75th/rm_essay.htm|archive-date=2004-03-13|work=Science News Online}}</ref> meningkatkan tumpuan para pengkaji sejak tahun 1980-an kerana kesedaran yang lebih besar mengenai potensi bahaya ini. Bahkan, pemesongan yang menghindari atau mengurangkan bahaya kesan asteroid mampu dilakukan dan sedang diselidiki.<ref name="tsr20120514">
{{Cite journal|last=Fernández Carril|first=Luis|date=May 14, 2012|title=The evolution of near Earth objects risk perception|url=http://www.thespacereview.com/article/2080/1|journal=The Space Review|archive-url=https://web.archive.org/web/20170629205156/http://www.thespacereview.com/article/2080/1|archive-date=2017-06-29|access-date=2017-11-15}}</ref> Banyak kapal dan kuar angkasa yang melakukan kajian berpendaratan di jasad-jasad ini kerana sifat graviti permukaan yang rendah dan orbit menyerupai peredaran Bumi.<ref name="USAToday-NEA">{{Cite news|url=https://www.usatoday.com/tech/science/space/2007-02-12-asteroid_x.htm|title=Near-Earth asteroids could be 'steppingstones to Mars'|last=Dan Vergano|date=February 2, 2007|access-date=2017-11-18|archive-url=https://web.archive.org/web/20120417034648/http://www.usatoday.com/tech/science/space/2007-02-12-asteroid_x.htm|archive-date=2012-04-17|work=USA Today}}</ref><ref name="wired20130323">{{Cite news|url=https://www.wired.com/wiredscience/2013/03/earth-approaching-asteroids-as-targets-for-exploration-1978/|title=Earth-Approaching Asteroids as Targets for Exploration (1978)|last=Portree|first=David S.|date=March 23, 2013|access-date=2017-11-09|archive-url=https://web.archive.org/web/20140112133317/http://www.wired.com/wiredscience/2013/03/earth-approaching-asteroids-as-targets-for-exploration-1978/|archive-date=2014-01-12|work=Wired|quote=People in the early 21st century have been encouraged to see asteroids as the interplanetary equivalent of sea monsters. We often hear talk of “killer asteroids,” when in fact there exists no conclusive evidence that any asteroid has killed anyone in all of human history. … In the 1970s, asteroids had yet to gain their present fearsome reputation … most astronomers and planetary scientists who made a career of studying asteroids rightfully saw them as sources of fascination, not of worry.}}</ref>
 
 
 
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