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Earth centred or Sun centred

Exercise and reference answers

Upper category
Earth
Lower category
Sun
Items
  1. Category
    Earth
    Item
    Epicycle
  2. Category
    Earth
    Item
    Deferent
  3. Category
    Earth
    Item
    Ptolemy
  4. Category
    Earth
    Item
    Fixed home
  5. Category
    Sun
    Item
    Copernicus
  6. Category
    Sun
    Item
    Sun centre
  7. Category
    Sun
    Item
    Six worlds
  8. Category
    Sun
    Item
    Galileo
Instructions
Send each idea to the Earth centred track or the Sun centred track.

Explanation

_Source: OpenStax Astronomy 2e, Chapter 2, Observing the Sky: The Birth of Astronomy._
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