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OUR CLOSE SHAVE WITH A CATASTROPHE ON NOVEMBER 8
Take a look at this animated picture in which the Earth appears at the center. The diagonal line represents Earth’s orbit around the sun. The moon is shown orbiting Earth, and the path of asteroid YU55 can be seen as it carried the asteroid inside the moon’s orbit. Imagine the scale, keeping in mind the fact that the moon’s orbit is roughly 770,000 kilometers (475,000 miles) wide. As you can see, the speeding giant asteroid YU55, with all the lethal force packed in its massive size unrestrained by gravity, missed Earth by a margin of 319,000 kilometers (about 200,000 miles).
Asteroid collision with Earth in the past had resulted in the extermination of entire species of living things on earth and radical changes in Earth's topography.
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