Bygone theory of astronomy (15 letters) — Crossword Helper

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The Clue

Bygone theory of astronomy (15 letter answer)

The Answer

PTOLEMAICSYSTEM

Tags

astronomy bygone classic disproven geocentric long ptolemaicsystem scientific theory

Notes

The answer PTOLEMAICSYSTEM is so rare that it appears less than once every 2500 puzzles.

Related Clues

Classic geocentric theory
Long-disproven scientific theory