Evolution: A Scientific American ReaderScientific American University of Chicago Press, 2008 M09 15 - 312 páginas From the Scopes “Monkey Trial” of 1925 to the court ruling against the Dover Area School Board’s proposed intelligent design curriculum in 2005, few scientific topics have engendered as much controversy—or grabbed as many headlines—as evolution. And since the debate shows no signs of abating, there is perhaps no better time to step back and ask: What is evolution? Defined as the gradual process by which something changes into a different and usually more complex and efficient form, evolution explains the formation of the universe, the nature of viruses, and the emergence of humans. A first-rate summary of the actual science of evolution, this Scientific American reader is a timely collection that gives readers an opportunity to consider evolution’s impact in various settings. |
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... Astronomers are not sure , for example , how the galaxies were formed , but there is no reason to think the process ... astronomer Edwin P. Hubble showed that the rate a galaxy is moving away from us is roughly proportional to its dis ...
... astronomers need to measure distances to galax- ies. One method for gauging distance is to observe the apparent bright- ness of a galaxy. If one galaxy is four times fainter in the night sky than an otherwise comparable galaxy, then it ...
... astronomers are involved in inten- sive research to measure both the distances to galaxies and the density of the universe. Estimates of the expansion time provide an important test for the big bang model of the universe. If the theory ...
... astronomers have derived by measuring cosmic expansion. Another theory, the steady state theory, also succeeds in ... astronomers to develop detectors sensitive enough to study distant galaxies in detail. When astronomers examine nearby ...
... Astronomers have studied this radiation in great detail using the Cosmic Background Explorer ( COBE ) satellite and a number of rocket- launched , balloon - borne and ground - based experiments . The cosmic exploded as supernovae . The ...
Contenido
Cellular Evolution | 85 |
Dinosaurs and Other Monsters | 169 |
Human Evolution | 249 |
Contents | 362 |
Illustration Credits | 364 |
The Evolution of the Universe | 1 |
Cellular Evolution | 85 |
Dinosaurs and Other Monsters | 169 |
Human Evolution | 249 |