The brilliant trailing beauty of fiery comets has inspired fear, wonder,
and awe since the dawn of human history. Brighter than stars, moving and
disappearing in their own singular orbits, comets have been among the
most mysterious elements in the sky, eluding our understanding until
very recently. With the aid of space probes, scientists have discovered
that these swiftly moving chunks of ice and carbon are more plentiful
and far more dangerous than suspected. Scientists are also beginning to
realize the monumental role played by comets in the development of the
Earth and solar system. David Levy describes in dramatic detail the
thrilling yet often devastating effects of comet collisions. In the dawn
of our solar system, the Earth was barraged with comets that may have
carried the materials necessary to lay the foundations for life on this
planet. Levy also presents compelling evidence for later comet
collisions, including those of the age of dinosaurs. Great impacts, Levy
asserts, not only caused the extinction of the dinesaurs, but ushered in
new species of life. As Levy so clearly explains, scientists are
realizing that comet collisions are virtually inevitable. Levy reveals
possible future collisions with the Earth and describes the terrible
risks to life they would pose. He even shows how we might prepare to
withstand the impact of large comets in the future.