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Cosmic Challenge: Alphabet Soup

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#1 PhilH

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Posted 02 January 2018 - 08:40 AM

The Moon's terminator is a fascinating sight through all telescopes. Here, along the lunar sunset/sunrise line, lighting can strike familiar lunar features in very unusual ways, transforming them in ways that go unsuspected when the Sun rides high overhead.

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#2 Dave Mitsky

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Posted 03 January 2018 - 12:37 AM

Thanks for using my photo, Phil!



#3 PhilH

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Posted 03 January 2018 - 04:32 AM

Thanks for using my photo, Phil!

My pleasure, Dave.  Thanks for discovering X2!  waytogo.gif



#4 Sarkikos

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Posted 11 January 2018 - 12:23 PM

Ever seen the Quincunx?  

 

Quincunx Spotted on the the Terminator!

https://www.cloudyni...the-terminator/

 

grin.gif

Mike


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#5 PhilH

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Posted 13 January 2018 - 06:09 AM

Thanks, Mike.  I've seen the thread, but never your Quincunx.  Named for five dots arranged in a cross, with four of them forming a square or rectangle and a fifth at its center.  My new word of the day.  Now, to work that into a conversation!


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#6 Sarkikos

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Posted 13 January 2018 - 01:17 PM

Quincunx would probably only come into conversation if you play dice!  The five on a die is a quincunx.

 

:grin:

Mike




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