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Target Earth!: Asteroid Collisions Past and Future

Jon Erickson




[PDF.xw46] Target Earth!: Asteroid Collisions Past and Future

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 | #18472559 in Books |  Tab Books |  1991-04 | Original language:English | PDF # 1 | File type: PDF | 176 pages

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Explosive asteroids with diameters of 100 feet or more are believed to strike the Earth about every 30 years, with impacts equal to the energy released by hydrogen bombs. Many scientists believe that even larger asteroids, as wide as five miles, produced geological and climatological changes that led to the extinction of the dinosaurs and other species. Is the Earth due for another such collision? This new addition to general science collections explores the subject of a...

You easily download any file type for your gadget.Target Earth!: Asteroid Collisions Past and Future   |  Jon Erickson. I was recommended this book by a dear friend of mine.

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