16 THE MOST VISUALLY IMPRESSIVE IMPACT CRATERS ON EARTH
Arizona's Jaw-Dropping Mile-Long Meteor Crater
Studying How Craters Are Made: The Planetary Impact Lab
Massive crater under Greenland's ice points to climate-altering impact in the time of humans
An impact crater is an approximately circular depression in the surface of a planet, moon, or other solid body in the Solar System or elsewhere, formed by the hypervelocity impact of a smaller body. In contrast to volcanic craters, which result from explosion or internal collapse, impact craters typically have raised rims and floors that are lower in elevation than the surrounding terrain. Although Meteor Crater is perhaps the best-known example of a small impact crater on Earth, impact craters range from small, simple, bowl-shaped depressions to large, complex, multi-ringed impact basins.
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