Near misses have happened many times in Earth’s long history. A fragment of asteroid or an errant comet approaches our world closely, skips through the upper atmosphere and back into space leaving a noiseless contrail, or bathes the evening sky in the shimmer of light reflected from its tail. But sometimes, a near miss or deflection shot morphs into a direct hit.
KeywordsMass Extinction Solar Radiation Pressure Solar Sail Mother Nature Oort Cloud
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