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02/23/2001 03:23 PM ID: 3874 Permalink   

Life on Earth Wiped Out by Massive Object From Space


Scientists have found evidence that nearly all life on Earth was wiped out by massive impact with an extraterrestrial object, such as a comet, eons before dinosaurs ruled the planet.

Nowhere on the planet was safe - 90% of life in the ocean, and 70% of all living organisms became extinct in an amazingly short period of time. It took a mere 8,000 to 100,000 years, what a scientist called "a microsecond in geologic time."

Luann Becker, lead author of the study, gathered the evidence through examining "buckyballs," carbon formations with a hollow cage inside. Within the buckeyballs, she discovered isotopes dating to that time, which could not have originated on Earth.

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