8A05.35 - Ptolemaic and Copernican Models of the Solar System
- Frank R. Tangherlini, "Heliocentrism Before Copernicus", Physics Today, Vol. 75, #12, Dec. 2022, p. 11.
- Janice VanCleave, #1, "The Earth In Space", Geography for Every Kid, p. 5.
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