A nearby prehistoric moon observatory built by the Hopewell Indian in Newark, Ohio is celebrating the northern-most position of the moon in its 18 year cycle.
I have not been able to find much information about this moon cycle. I thought it would make a good topic for APOD.
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- Fri Oct 21, 2005 4:49 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: 18 year moon cycle
- Replies: 2
- Views: 1791