Notes
Slide Show
Outline
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From Seeds, Chapter 1:
The Scale of the Cosmos
  • Astronomy deals with objects on a vast range of sizes, speeds, and times
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The Scale of the Cosmos
    •   “Space is big. Really big. You just won't believe how vastly, hugely, mind-bogglingly big it is. I mean, you may think it's a long way down the road to the chemist, but that's just peanuts to space.”
    • -- Douglas Adams, The Hitchhiker's Guide to the Galaxy, 1979
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A Campus Scene
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Other approaches to Sizes
  • Powers of Ten movie(s)
  • Cosmic Voyages
  • Contact Opening
  • When looking to reach readers, relate to everyday experience whenever possible, if only to boggle with the truth.
  • Examples?  How long to walk to the moon if you could?  The sun?  Another star?  How about at jet airplane speeds?
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Units
  • Astronomical Unit (AU)
  • Light Year (and Light Speed Units)
  • Parsec (about 3.2 light-years, or 206265 Aus)