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Explorations of the Universe Lecture I

Explorations of the Universe Lecture I. Steven Dutch LS-116 Phone:465-2246 e-mail: dutchs@uwgb.edu home page: www.uwgb.edu/dutchs. Some Issues in Cosmos. Carl Sagan! Authority and Limits of Science Science and Religion Science and Irrationalism.

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Explorations of the Universe Lecture I

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  1. Explorations of the Universe Lecture I Steven Dutch LS-116 Phone:465-2246 e-mail: dutchs@uwgb.edu home page: www.uwgb.edu/dutchs

  2. Some Issues in Cosmos • Carl Sagan! • Authority and Limits of Science • Science and Religion • Science and Irrationalism

  3. Cosmos #1 - Shores of the Cosmic Ocean • Personal Voyage • "The Cosmos is all that ever is, was or will be.” • "Stars of diamond - atoms as massive as stars." • "We are made of star stuff"

  4. Survey of the Universe • “Ship of the Imagination” • "The patterns of nature and the laws of nature are the same everywhere.” • "Rare forms of matter"

  5. The Library at Alexandria • First real research institute in history • Start of Western science? • Symbol • Loss of Achievements • Dangers of Anti-Intellectualism • Need to Relate to Society

  6. The Cosmic Calendar • Compresses the history of the Universe into a year. On this scale: • One year = 15 billion years • One month = 1.25 billion years • One day = 40 million years • One hour = 1.7 million years • One minute = 30,000 years • One second = 500 years

  7. Essential Points • What a light year is • What galaxies are: how big, how many stars (nearest power of ten) • Role of Library of Alexandria in history and as a symbol in Cosmos • Who Eratosthenes was, what he did and how he did it. • Cosmic Calendar: when universe forms, Milky Way, Solar System, life and humans appear.

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