What should the average person know about science? Because science is so central to life in the 21st century, science educators and other leaders of the scientific community believe that it is essential that everyone understand the basic concepts of the most vital and far-reaching disciplines. "Cosmology 101" does exactly that. This accessible volume provides readers - whether students new to the field or just interested members of the public - with the essential ideas of evolution using a minimum of jargon and mathematics. Concepts are introduced in a progressive order so that more complicated ideas build on simpler ones, and each is discussed in small, bite-sized segments so that they can be more easily understood. "Cosmology 101" introduces readers to all the aspects that make cosmology such a vibrant and dynamic field, and explains how scientists came to know what they know about the universe. It includes topics such as: the realisation that the Milky Way was not an "island universe", but only one of many galaxies, which set into motion a new revolution in cosmology; Albert Einstein's General Theory of Relativity, which has completely altered how scientists model the universe; the debates over the Steady-State versus the Big Bang model of the universe, and the recent theories, such as the inflationary model of the universe.
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