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retardation point
subjectfact 
retardation pointhas duration zero (it is a point in time)2001-09-27 09:30:07.0
does not occur for meteoroids heavier than 10 tons they impact with a significant fraction of their cosmic velocity2001-09-27 09:30:07.0
has altitude inversely proportional to the mass of the meteoroidhas source: Heide, Fritz 1964, Meteorites, University o Chicago Press, 2001-09-27 09:30:07.0
has start time shortly after the time of initial contact with atmosphere but before impact2001-09-27 09:30:07.0
has definition the point in the flight of a meteoroid through the atmosphere where it loses its cosmic velocity and falls freely due to gravity2001-09-27 09:30:07.0
is a kind of meteor event2001-09-27 09:30:07.0
impact eventcan produce a crater2001-09-27 09:30:06.0
eventhas synonym world point2001-09-27 09:29:57.0
has time of occurrence2001-09-27 09:29:57.0