1) Lunar science
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https://www.crosswordclues.com/clue/impact-crater
An impact crater is an approximately circular depression in the surface of a planet, moon or other solid body in the Solar System, formed by the hypervelocity impact of a smaller body with the surface. In contrast to volcanic craters, which result from explosion or internal collapse, impact craters typically have raised rims and floors that are lo...
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http://en.wikipedia.org/wiki/Impact_crater
any feature on the continents that has been created by the impact of cosmic bodies (meteorites, asteroids, or comets) on the Earth`s surface. In ... [16 related articles]
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http://www.britannica.com/eb/a-z/i/11
Clavius and other impacr craters on the Moon A crater formed by the high-speed impact of a meteoroid, asteroid, or comet with a solid surface. Craters are a common feature on most moons (an exception is Io), asteroids, and rocky planets, and range in size from a few cm to over 1,000 km across, i...
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http://www.daviddarling.info/encyclopedia/I/impact_crater.html
Impact craters are the remains of collisions between an asteroid , comet , or meteorite and the Earth. Some large impact craters include the Chicxulub crater (off the Yucatan peninsula) and the Shiva crater (off the coast of India), both of which date from the K-T boundary, 65 million years ago, and were probably implicated in the K-T mass extincti...
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http://www.enchantedlearning.com/subjects/dinosaurs/glossary/
depression in the ground created by the impact of an asteroid, meteoroid or comet
Found on
https://sciencetrek.org/sciencetrek/topics/asteroids_comets/glossary.cfm
crater (def. 2).
Found on
https://www.infoplease.com/dictionary/impact-crater
No exact match found.
