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Keynote lectures/Craters by radiation
[[Image:Chain of impact craters on Ganymede.jpg|thumb|right|250px|The image shows a chain of craters on Ganymede. Credit: Galileo Project, Brown University, JPL, NASA.]]
A '''crater''' may be any large, roughly circular, depression or hole in or beneath the rocky surface of a rocky object.

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==Hypotheses==
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# There is at least one key clue or ingredient that allows the differentiation of craters by their origins or causative factors.

==See also==
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* [[Meteor astronomy]]
* [[Meteorites]]
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==References==
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(contracted; show full)[[Category:Earth sciences/Lectures]]
[[Category:Geography/Lectures]]
[[Category:Geology/Lectures]]
[[Category:Materials sciences/Lectures]]
[[Category:Planetary sciences/Lectures]]
[[Category:Radiation/Lectures]]
[[Category:Radiation astronomy/Lectures]]
[[Category:Resources last modified in November 2018]]