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meteorite crater

 
Sci-Tech Dictionary: meteorite crater
(′mēd·ē·ə′rīt ′krād·ər)

(geology) An impact crater on the surface of the earth or of a celestial body caused by a meteorite; a characteristic feature on the earth is the upturned rim, which formed as the rocks rebounded following the impact.


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Britannica Concise Encyclopedia: meteorite crater
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Meteorite craters on the surface of the Moon, photographed by Lunar Orbiter IV
(click to enlarge)
Meteorite craters on the surface of the Moon, photographed by Lunar Orbiter IV (credit: Courtesy of National Aeronautics and Space Administration)
Depression that results from the impact of a meteorite with a solid object in space. Impact craters have been discovered on Earth, the Moon, Mars, other planets and satellites, and asteroids; they probably occur on unprotected surfaces of similar bodies throughout the universe. Impact craters are much less common on Earth than on the Moon, partly because friction burns up most of the smaller bodies that enter Earth's atmosphere. Thus, any craters formed on Earth's surface tend to be larger than the average size of all entering meteorites.

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Sci-Tech Dictionary. McGraw-Hill Dictionary of Scientific and Technical Terms. Copyright © 2003, 1994, 1989, 1984, 1978, 1976, 1974 by McGraw-Hill Companies, Inc. All rights reserved.  Read more
Britannica Concise Encyclopedia. Britannica Concise Encyclopedia. © 2006 Encyclopædia Britannica, Inc. All rights reserved.  Read more