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|Asteroid and Comet Impact Hazards|
Information about the study and probability of asteroid-earth impacts. Included are articles, photographs, animations. From NASA.
NASA scientists plan to crash a spaceship into a comet to study the effect of the impact in 2005. Includes background information, news, mission timeline, general information about comet, and details of the flight system.
Describes comets such as Hale-Bopp and others, while also providing teacher activities and photographs.
Find out all about the different types of meteorites. Available in English and Dutch.