Starship Asterisk*

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.

I'll second that!

Norval

http://www.mythicalireland.com/astronom ... cycle.html
http://scienceworld.wolfram.com/astrono ... ycles.html

Here's a couple easy-read sites to add to your info base.