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micrometeors
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The answer MICROMETEORS has 1 possible clue(s) in existing crosswords.
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The word MICROMETEORS is NOT valid in any word game. (Sorry, you cannot play MICROMETEORS in Scrabble, Words With Friends etc)
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Definitions of micrometeors in various dictionaries:
noun - a meteorite or meteoroid so small that it drifts down to earth without becoming intensely heated in the atmosphere
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Possible Crossword Clues |
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Specks of space dust |
Last Seen in these Crosswords & Puzzles |
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Sep 17 2012 Wall Street Journal |
Micrometeors might refer to |
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A Micrometeorite is essentially a micrometeoroid that has survived entry through Earth's atmosphere. The size of such a particle ranges from 50 µm to 2 mm. Usually found on Earth's surface, micrometeorites differ from meteorites in that they are smaller in size, more abundant, and different in composition. They are a subset of cosmic dust, which also includes the smaller interplanetary dust particles (IDPs).Micrometeorites enter Earth's atmosphere at high velocities (at least 11 km/s) and undergo heating through atmospheric friction and compression. Micrometeorites individually weigh between 10−9 and 10−4 g and collectively comprise most of the extraterrestrial material that has come to the present-day Earth.Fred Lawrence Whipple first coined the term "micro-meteorite" to describe dust-sized objects that fall to the Earth. Sometimes meteoroids and micrometeoroids entering the Earth's atmosphere are visible as meteors or "shooting stars", whether or not they reach the ground and survive as meteorites and micrometorites. |