A Space & astronomy forum. SpaceBanter.com

Go Back   Home » SpaceBanter.com forum » Astronomy and Astrophysics » Amateur Astronomy
Site Map Home Authors List Search Today's Posts Mark Forums Read Web Partners

earth's tilt



 
 
Thread Tools Display Modes
  #1  
Old September 23rd 12, 08:53 PM posted to sci.astro.amateur
palsing[_2_]
external usenet poster
 
Posts: 3,068
Default earth's tilt

On Sunday, September 23, 2012 12:49:01 AM UTC-7, Paul Schlyter wrote:
On Sat, 22 Sep 2012 11:30:50 -0700 (PDT), palsing wrote:

OK, I could have said "all day, every day"... and I also could have


specified "nearly at Polaris"...



Which wouldn't be true. In some 12 000 years, the Eart's axis will

point near Vega instead, for example.


Well, if you had actually read my post carefully, I did say that "right now the Earth's axis points continuously at Polaris,", implying that the pole location changes with time...
  #2  
Old September 23rd 12, 09:48 PM posted to sci.astro.amateur
oriel36[_2_]
external usenet poster
 
Posts: 8,478
Default earth's tilt

On Sep 23, 8:53*pm, palsing wrote:
On Sunday, September 23, 2012 12:49:01 AM UTC-7, Paul Schlyter wrote:
On Sat, 22 Sep 2012 11:30:50 -0700 (PDT), palsing wrote:


OK, I could have said "all day, every day"... and I also could have


specified "nearly at Polaris"...


Which wouldn't be true. In some 12 000 years, the Eart's axis will


point near Vega instead, for example.


Well, if you had actually read my post carefully, I did say that "right now the Earth's axis points continuously at Polaris,", implying that the pole location changes with time...


The only star either of you have to consider is the central star
around which the polar coordinates turn in a circle just as the polar
coordinates and the Equatorial rings of Uranus are seen to do and the
rings of Uranus will turn a full 360 degrees over an 84 year orbital
period as seen from Earth despite a foolish belief that the Earth's
orbital motion influences the observations.

An able astronomer would interpret the turning of the polar
coordinates to the central Sun as being carried around in a circle by
the orbital behavior of the Earth rather than any 'tilting' action it
has hence axial precession as it is presently understood is a
hindrance to this vital astronomical modification.

Like the Earth,Uranus polar coordinates keep the same orientation
throughout an orbital period -

http://www.lcsd.gov.hk/CE/Museum/Spa...anus_orbit.jpg

It is when the actual orbital motion is scrutinized locally,that
observers see that the dynamic for the annual polar precession to the
central Sun is a consequence of the orbital behavior of Uranus and a
separate ecliptic axis around which the polar coordinates and the
rings turn East to West to the central Sun-

http://www.daviddarling.info/images/...gs_changes.jpg

Astronomers indeed !,you need confidence and intelligence to work out
the few details and apply them to the Earth rather than homocentrist
welfare recipients who are too dull to pick up the new approach using
modern imaging.



 




Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Why does Earth's tilt produce summers and winters? AlexZ Astronomy Misc 66 November 9th 06 05:15 AM
Uranus and its Tilt ??? G=EMC^2 Glazier Misc 3 July 5th 06 12:14 AM
Uranus and its Tilt ??? G=EMC^2 Glazier Misc 0 June 25th 06 02:24 PM
Direction of the Earth's axis tilt in the x-y ecliptic plane? canopus56 Amateur Astronomy 35 March 22nd 06 10:00 PM
sundial & Earth's tilt questions Benoit Morrissette Astronomy Misc 22 September 1st 03 08:55 AM


All times are GMT +1. The time now is 11:06 PM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright ©2004-2025 SpaceBanter.com.
The comments are property of their posters.