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Old 09-01-2019, 03:18 PM
peterskye (Peter)
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peterskye is offline
 
Join Date: Jul 2007
Location: Ulladulla, NSW Australia
Posts: 7
Good explanation of Astronomical Threads

This item was posted on the web in Sept 2018. It is fairly comprehensive.


https://agenaastro.com/astronomy-threads-explained.html


Peter Skye
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