Download e-book for iPad: 21st century astronomy by John Jeffrey Hester; et al

By John Jeffrey Hester; et al

ISBN-10: 0393931986

ISBN-13: 9780393931983

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She received a BS degree in physics and an AB degree in feminist studies from Stanford University, and MS and PhD degrees in astronomy and astrophysics from the University of California–Santa Cruz. As a graduate student she spent 13 months at the Amundsen Scott station at the South Pole in Antarctica. She studies active galactic nuclei, using groundbased and X-ray telescopes. She teaches courses on astronomy, astrobiology, women and science, and polar exploration. At Barnard she has served as chair of the Physics & Astronomy Department, chair of the Women’s Studies Department, chair of Faculty Governance, and interim associate dean for Curriculum and Governance.

3 4 Chapter 1 Why Learn Astronomy? 1 The place where we reside in the universe— our cosmic address: Earth, Solar System, Milky Way Galaxy, Local Group, Virgo Supercluster. We live on Earth, a planet orbiting the Sun in our Solar System, which is a star in the Milky Way Galaxy. The Milky Way is a large galaxy within the Local Group of galaxies, which in turn is located in the Virgo Supercluster. Earth Sun Solar System Milky Way Galaxy Local Group Virgo Supercluster The Sun is an ordinary, middle-aged star, more massive and luminous than some stars but less massive and luminous than others.

It is hard to avoid the conclusion that political and cultural considerations strongly influence which scientific research projects are funded. This choice of funding channels the directions in which scientific knowledge advances and can lead to serious ethical issues. For example, moral judgments about nontraditional lifestyles greatly restricted the funding available for AIDS research during the decade or so after its discovery. More recently, progress in stem cell research and solutions to human-caused climate change have been hindered by widely distributed misinformation on the Web and by constant political bickering.

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21st century astronomy by John Jeffrey Hester; et al

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