Meteoroid: Forskelle mellem versioner
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En '''meteoroid''' (også kaldet '''meteoroide''') er et lille stenobjekt i kredsløb om [[Solen]]. En meteoroid er mindre end en [[småplanet]] ([[asteroide]]). Nogle [[definere]]r at et [[Objekt (genstand)|objekt]] som er en [[sten]] og mindre end ca. 100 [[meter]] i [[diameter]] kaldes en '''meteoroid'''.
<ref>[http://www.vency.com/asteroids.html Asteroids, Comets, Meteoroids. Near Earth Objects. A Nature's threat from the sky] Citat: "...Meteoroids are defined as being solid particles in space larger than 100 µm in size..and smaller than about 10 meters..' [Steel,D.,1997, in 'Near Earth Objects. Annals of New York Academy of Sciences, vol. 822, p.31]..."</ref>
<ref>[https://web.archive.org/web/20050415194957/http://www.rasc.ca/observing/asteroids/astfaq.html RASC Asteroids FAQ] Citat: "...As a general rule an object needs to be one kilometer or larger in diameter to be called an asteroid, although there is no formal agreement on that size. Some astronomers feel that we should include all objects 20 meters or larger in size since an object just 20 meters across travelling at cosmic speeds can invoke serious damage on the earth...Objects smaller than asteroids are called meteoroids..."</ref>
<ref>[http://web.archive.org/web/20060208091908/http://www.planetary.org/explore/topics/near_earth_objects/facts.html Meteoroids, Asteroids, Comets] Citat: "...Meteoroids are rocky bodies about 50 meters across or smaller whose impact with Earth is likely to deliver meteorite samples to the surface, but produce no impact [[krater|crater]]...[[Småplanet|Asteroids, or minor planets]], are rocky bodies larger than 50 meters across..."</ref>
<ref>[http://www.physics.smu.edu/jcotton/ph1311/ch04a.htm The Solar System] Citat: "...Our new book contains, for the first time I have found it, some definition of the size break; under 100 meters is a meteoroid and over it is an asteroid..."</ref>
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