Observe images illustrating the impact theory of the moon's formation

Southwest Research Institute, University of California at Santa Cruz, Exploring Earth

Find a Flash animation illustrating how the moon formed after the Earth was hit by a Mars-sized object. Note the ejection of earth materials into orbit where these debris would later coalesce to form the moon. The animation only simulates the results of the collision for a twenty four hour period and does not show the eventual accretion of the moon into the solid body viewed today. The animation can be paused and rewound to emphasize important points.

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This resource is referenced here:Keywords: moon, astronomy, impact theory