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Definitions for "MICROMETEOROID"
Keywords:  meteoroid, interplanetary, meteorite, weighing, rotavators
Related Terms: Meteoroid, Meteor shower, Comet, Asteroid, Meteor, Terrestrial planet, Planet, Planetoid, Moon, Oort cloud, Terrestrial planets, Planetesimals, Interplanetary space, Planetesimal, Outer planets, Inner planets, Comets, Inferior planet, Asteroid belt, Gas giants, Bolide, Sun, Minor planet, Planets , Inferior planets, Superior planet, Solar system, Superior planets, Meteorite, Extrasolar planet, Jovian planet, Solar flares, Asteroid, Prominence, Protoplanet, Apollo asteroid, Occultation, Kuiper belt, Eros, Inferior conjunction, Heliocentric, Coronal mass ejection, Heliopause, Gas giant, Corona, Asteroids , Orbiter, Coronagraph, Deferent, Phase
Tiny particle of space debris (natural or artificial) ravling at high speed through space
quest.arc.nasa.gov
A meteoroid of microscopic size. In general, such small meteoroids are stopped in the outer atmosphere of the Earth without producing enough frictional force to result in a visible meteor. However, on an airless body, such as the Moon or Mercury, they can hit the surface with their full interplanetary velocity, and produce a microscopic impact crater.
cseligman.com
a meteorite or meteoroid so small that it drifts down to earth without becoming intensely heated in the atmosphere
wordnet.princeton.edu
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Keywords:  celestial, fragment, rock, small, body
A micrometeoroid is a relatively small celestial body or rock fragment.
neurolab.jsc.nasa.gov