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As promised



 
 
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  #1  
Old September 22nd 17, 02:51 PM posted to sci.astro.amateur
Gerald Kelleher
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Default As promised

https://www.usap.gov/videoclipsandmaps/spwebcam.cfm

The polar day/night cycle and its cause is here to stay with its own sunrise/sunset on the equinoxes and noon/midnight on the solstices.

For now it is here to enjoy for those who can.

  #2  
Old September 22nd 17, 04:01 PM posted to sci.astro.amateur
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Default As promised

On Friday, September 22, 2017 at 2:51:30 PM UTC+1, Gerald Kelleher wrote:
https://www.usap.gov/videoclipsandmaps/spwebcam.cfm


Wow, look at that Pole tilting!
  #5  
Old September 23rd 17, 08:31 AM posted to sci.astro.amateur
Gerald Kelleher
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Default As promised

I ventured into the cloudy nights forum where everyone is protected from creative/productive notions by a firewall of moderation yet most of these people are decent and just want to practice a magnification exercise under the name of astronomy. When it comes to the astronomy that really does impact terrestrial sciences or solar system structure they are lost as indeed are the people in this forum as satisfaction is drawn from creative inspiration rather than just the simple use of a telescope and an interest in optics.

I see them long to re-instate Pluto as a planet but their level of astronomical understanding is below that needed to make a difference so this newsgroup serves as a beacon in this matter along with so many other things.

Planets were not defined in isolation, they were isolated as celestial objects by their observed motion against the background stars where the Sun and moon were seen to move directly through the field of stars whereas the planets displayed direct/retrograde motion. The celestial sphere enthusiasts instituted a notion that the Sun also wanders up and down through the background stars along with the planets so they already lost the external references by which the structure of the solar system is discerned. The price of the Sun 'crossing the celestial equator' is the loss of astronomical thinking to the clockwork solar system so these people lamenting Pluto's status deserve what they get.



 




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