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How were the constellation boundaries set? They appear pretty arbitrary.

Robert Bobo, Mckenzie, Tennessee
RELATED TOPICS: CONSTELLATIONS
Constellations
If you think the constellation boundaries look arbitrary now, consider the situation a century ago. No official star chart existed, and those in common use not only set different boundaries for the star patterns but also all had differing numbers of constellations. Some had as few as 70, and others topped out near 100.

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