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The shadows grow long now



 
 
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  #1  
Old March 12th 17, 05:24 PM posted to sci.astro.amateur
Gerald Kelleher
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Default The shadows grow long now

The Sun is coming close to setting at the South pole now and the camera catches that event with greater clarity with each passing day with weather permitting -

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

The Equinox is an astronomical event where two different types of sunrises or sunsets occur within the same day and this event has happened as long as the Earth has been travelling around the Sun as are the distinct rotational causes for the dual sunrise/sunset events.

The insight predates the technological achievement which shows clearly how the planet responds to the daily and annual rotations to the Sun and especially with a focus on the Antarctic continent where daily rotation is complemented by the slow rotation of the continent across the sunlit face of the Earth and parallel to the orbital plane -

https://www.youtube.com/watch?v=CFrP6QfbC2g&t=45s

Why people would choose not to use their intelligence and imagination where it is necessary to subtract the Earth's daily rotation in order to appreciate the the entire surface of the planet turns once to the Sun across the period of a year is not for me to answer but it is and always will be there for those who make the effort to notice.

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  #2  
Old March 14th 17, 05:35 PM posted to sci.astro.amateur
Gerald Kelleher
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Default The shadows grow long now

For a while there is a lovely image of two people walking towards the South Pole telescope -

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

In a week as the Earth turns as a function of its orbital motion, the South pole will move through the circle of illumination and the Sun will disappear from view for 6 months.





  #3  
Old March 14th 17, 06:10 PM posted to sci.astro.amateur
Chris.B[_3_]
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Default The shadows grow long now

On Tuesday, 14 March 2017 17:35:38 UTC+1, Gerald Kelleher wrote:
will disappear from view for 6 months.


God knows, we wish you would!
  #4  
Old March 17th 17, 10:06 AM posted to sci.astro.amateur
Gerald Kelleher
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Default The shadows grow long now

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

It can happen that some people are driven by convictions while having different or no standards hence they see little purpose in doing something productive or creative.

Rather than ask the question - "What causes the Seasons ?", the higher standard is what causes the Sun to set at the South Pole presently as a single annual event on the Equinox while its Northern counterpart sees the Sun rise once and only once this year.

As the Sun comes into view once each 24 hours as a function of daily rotation then by simple logic the same is applied to the annual Equinox event but from a distinct rotational cause, in this case the entire surface of the planet turns once to the Sun over the course of an orbit and turns parallel to the orbital plane.

This is not expressed as a conviction but as an observation. It is for people who wake up with purpose in their lives -

https://www.youtube.com/watch?v=CFrP6QfbC2g&t=45s




 




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