Stars and Galaxies
Addressing the newest developments and latest discoveries in the exciting study of astronomy, this revised seventh edition of STARS AND …
Addressing the newest developments and latest discoveries in the exciting study of astronomy, this revised seventh edition of STARS AND GALAXIES helps students use astronomy to understand science and use science to understand what we are. Fascinating and engaging, STARS AND GALAXIES illustrates the scientific method and guides students to answer these fundamental questions: What are we? How do we know? In discussing the interplay between evidence and hypothesis, author Michael Seeds provides not only facts but also a conceptual framework for understanding the logic of science. Coverage includes observations of the shapes of stars; evidence of dark energy, quasars, and galaxy collisions; and a look inside supernova explosions. And whether you choose to assign homework in an online environment, give your students access to an affordable and interactive online text, or do both, FOUNDATIONS OF ASTRONOMY Online Version (which contains the complete text of STARS AND GALAXIES) is the ideal solution for your course needs. The Online Version gives your students Web-based access to a digital version of Michael A. Seeds' best-selling astronomy textbook as well as the online Enhanced WebAssign homework management system so you can assign and manage homework online. Visit academic.cengage.com/astronomy/seeds for an interactive demonstration today!
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The Milky Way galaxy, which is composed of billions of stars, is one of billions of galaxies in the universe. the Sun is considered to be a fairly typical star, analysis of starlight indi- cates that stars vary greatly in size, tempera- ture, and color and are composed primarily of hydrogen and helium.
Since a galaxy contains many stars, we can also talk about its luminosity, and the flux we receive from it. However, because galaxies are spatially extended2, we...
How did Hubble prove that galaxies lie far beyond the Milky Way? – He measured the distance to the Andromeda galaxy using Cepheid variable stars as standard...