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Explorations of the Universe Lecture I. Steven Dutch LS-116 Phone:465-2246 e-mail: [email protected] 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

Explorations of the Universe Lecture I

Steven Dutch

LS-116 Phone:465-2246

e-mail: [email protected]

home page: www.uwgb.edu/dutchs

some issues in cosmos
Some Issues in Cosmos
  • Carl Sagan!
  • Authority and Limits of Science
  • Science and Religion
  • Science and Irrationalism
cosmos 1 shores of the cosmic ocean
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"
survey of the universe
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"
the library at alexandria
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
the cosmic calendar
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
essential points
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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