View Full Version : Questioning the Impact Theory: What Really Killed the Dinosaurs?

2014-Oct-23, 02:30 PM
About sixty five and a half million years ago, the Earth suffered its largest known cosmic impact. An asteroid or comet nucleus about 10 km in diameter slammed into what is now the Yucatan peninsula of Mexico. It gouged out a crater 180 to 200 km in diameter; nearly twice as large as the prominent […]

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