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Defending the Earth

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.

Keywords

Mass Extinction Solar Radiation Pressure Solar Sail Mother Nature Oort Cloud 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media, LLC 2007

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