History of Crater

	Revision 5 . . November 22, 2001 5:20 pm by Bryan Derksen [made description a little more planet-neutral]
	Revision 4 . . (edit) September 22, 2001 10:39 pm by Zundark [add link]

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1). A crater is a circular depression on the surface of a planet. Craters are typically caused by meteorite impacts, although some are caused by volcanic activity. In the ecenter of a crater often forms a [crater lake]? and in craters formed by meteorites, a central island is usually a prominent feature in the lake.

1). A crater is a circular depression on the surface of a planet, moon, asteroid, or other celestial body. Craters are typically caused by meteorite impacts, although some are caused by volcanic activity. In the center of craters on Earth a [crater lake]? often accumulates, and in craters formed by meteorites a central island (caused by rebounding crustal rock after the impact) is usually a prominent feature in the lake.