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This gorgeous planet and its motions



 
 
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  #1  
Old July 29th 15, 09:45 PM posted to sci.astro.amateur
oriel36[_2_]
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Default This gorgeous planet and its motions

As the Earth moves through space it turns as a function of the Earth's orbital motion so that the North pole is roughly 14 degrees past the center of the full sunlit face of the Earth when the picture was taken on July 6th -

http://www.nasa.gov/image-feature/af...ion-miles-away


So many visitors to this forum still adhere to the Earth tilting towards and away from the Sun even when this impressive imaging is available to demonstrate that the Earth has dual surface rotations to the central Sun.

It is,of course, for astronomers to enjoy.
  #2  
Old July 30th 15, 09:58 AM posted to sci.astro.amateur
oriel36[_2_]
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Default This gorgeous planet and its motions

On Wednesday, July 29, 2015 at 9:45:44 PM UTC+1, oriel36 wrote:
As the Earth moves through space it turns as a function of the Earth's orbital motion so that the North pole is roughly 14 degrees past the center of the full sunlit face of the Earth when the picture was taken on July 6th -

http://www.nasa.gov/image-feature/af...ion-miles-away


So many visitors to this forum still adhere to the Earth tilting towards and away from the Sun even when this impressive imaging is available to demonstrate that the Earth has dual surface rotations to the central Sun.

It is,of course, for astronomers to enjoy.


A wonderful way to show kids the surface rotation of the Earth as a component of its orbital motion is through a clock registering the polar day/night cycle as our planet turns slowly and unevenly to the central Sun over an circuit of the Sun.

Presently it is, in orbital terms, roughly 1:30 PM across the Northern hemisphere while it is 1:30 AM in the Southern hemisphere using the North and South poles as convenient references for this orbital day or 'polar day/night' as most people now know it.

In under 2 months the polar points will be positioned at opposite ends of that sunlit face and I challenge NASA to produce photos and time lapse footage showing exactly what is happening as the Earth moves through space.
  #3  
Old July 30th 15, 08:07 PM posted to sci.astro.amateur
Mike Collins[_4_]
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Default This gorgeous planet and its motions

oriel36 wrote:
On Wednesday, July 29, 2015 at 9:45:44 PM UTC+1, oriel36 wrote:
As the Earth moves through space it turns as a function of the Earth's
orbital motion so that the North pole is roughly 14 degrees past the
center of the full sunlit face of the Earth when the picture was taken on July 6th -

http://www.nasa.gov/image-feature/af...ion-miles-away


So many visitors to this forum still adhere to the Earth tilting towards
and away from the Sun even when this impressive imaging is available to
demonstrate that the Earth has dual surface rotations to the central Sun.

It is,of course, for astronomers to enjoy.


A wonderful way to show kids the surface rotation of the Earth as a
component of its orbital motion is through a clock registering the polar
day/night cycle as our planet turns slowly and unevenly to the central
Sun over an circuit of the Sun.

Presently it is, in orbital terms, roughly 1:30 PM across the Northern
hemisphere while it is 1:30 AM in the Southern hemisphere using the North
and South poles as convenient references for this orbital day or 'polar
day/night' as most people now know it.

In under 2 months the polar points will be positioned at opposite ends of
that sunlit face and I challenge NASA to produce photos and time lapse
footage showing exactly what is happening as the Earth moves through space.


You can see that in the second half of this simulation.
  #4  
Old July 30th 15, 08:12 PM posted to sci.astro.amateur
oriel36[_2_]
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Posts: 8,478
Default This gorgeous planet and its motions

The difference between a magnification hobbyist and an astronomer in contained in this recent picture -

http://news.sciencemag.org/sites/def...?itok=Q9vIQxqZ

The celestial sphere hobbyist looks out from the surface of the Earth using daily rotational traits and tries to make sense of the solar system that way whereas an astronomer would look at the Earth from its orbital plane and work from the perspective that the North and South poles are 23 1/2 degrees below and above the full sunlit face of the Earth as seen from the orbital plane as seen in the image above.



  #5  
Old July 30th 15, 08:30 PM posted to sci.astro.amateur
oriel36[_2_]
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Posts: 8,478
Default This gorgeous planet and its motions

The difference between a magnification hobbyist and an astronomer is contained in this recent picture -

http://news.sciencemag.org/sites/def...?itok=Q9vIQxqZ

The celestial sphere hobbyist looks out from the surface of the Earth using daily rotational traits and tries to make sense of the solar system that way whereas an astronomer would look at the Earth from its orbital plane and work from the perspective that the North and South poles are 23 1/2 degrees below and above the full sunlit face of the Earth as seen from the orbital plane and contained in the NASA image.

As the Earth and all other planets move along their orbital plane they turn to the central Sun as a component of that motion and isolated as the polar day/night cycle on Earth or as the seasons when combined with daily rotation.

http://www.astronomy.com/-/media/imp...500.jpg?mw=600


The attempt to turn saa into a political animal with social opinions and commentaries only highlights a mediocrity that astronomy can do without so when participants get tired of elevating the dull and dreary they can always come back to this new astronomy. There is a kindness in the heart of all astronomers just as there is a mental toughness to weigh up great ideas so the complete individual always wins out against those who traffic merely in consensual convictions and ideologies.

It is an invitation to come home for those who can.


 




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