Books > Science & Mathematics > Astronomy, space & time > Galaxies, clusters, intergalactic matter
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Colliding Galaxies - The Universe in Turmoil (Hardcover, Softcover Reprint Of The Original 1st Ed. 1990)
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Colliding Galaxies - The Universe in Turmoil (Hardcover, Softcover Reprint Of The Original 1st Ed. 1990)
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In contrast to his earlier, all-encompassing expositions on the
universe (Search for a Supertheory, 1987; Creation, 1988), the
Idaho State physicist-astronomer focuses here on galaxies, those
"island universes" Kant foresaw to be composed of stars like our
own Milky Way. Not until the 1920's was there convincing evidence
(thanks to the work of Edwin Hubble) that there are indeed worlds
beyond worlds made up of billions of stars. What followed was a
taxonomy of galaxies (spirals, ellipticals, and "peculiars") and
much theorizing about their evolution and destiny. The study of
galaxies took off after WW II, when radio astronomy came into its
own and it was discovered that "active" as opposed to inactive
galaxies had cores that transmit intense synchrotron radiation at
radio frequencies and often at higher frequencies as well. The
source? Supernova remnants. . .black holes. . .quasars. .
.colliding galaxies: case-by-case analyses are offered here. The
idea of colliding galaxies is particularly intriguing, given their
myriad numbers and their huge spread in space. (Yet the probability
of individual stars colliding is nfl since the stars are so far
apart.) The advent of supercomputers has made it possible to model
collisions as well as mergers of galaxies and leads Parker to final
conjectures on how clusters and superclusters of galaxies have
formed. An image of the universe as soapsuds emerges, with the soap
bubbles being voids surrounded by chains of galaxy superclusters.
As always, Parker tempers the heady theorizing with portraits of
personalties and the promise that more and better technology will
resolve current debates. We believe him. (Kirkus Reviews)
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