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Re: Milky Way's Kinetic Energy in Our orbiting arm; this motion we share with the larger that is together with us

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jamesl51165@gmail.com wrote:

> The levels of orbital motion for the Earth are easy to pin point...
> We orbit the center of the Sun's gravity.

Gravity is a force (field); it has no center.

Terra (Earth) orbits the center of _mass_ of _the Sol System_ (its 
barycenter; which is close to Sol’s center of mass).

> We orbit the Milky Way gravity center.

Given that Sol’s mass dominates the Sol System (99.86 % of the Sol System’s 
total mass comes from that star), it would be only correct to say that Sol 
or the Sol System orbit the Milky Way barycenter.  So do other star systems 
in the Milky Way.


PointedEars
-- 
Q: What did the female magnet say to the male magnet?  
A: From the back, I found you repulsive, but from the front
   I find myself very attracted to you.
(from: WolframAlpha) 

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Milky Way's  Kinetic Energy in Our orbiting arm; this motion we share with the larger that is together with us jamesl51165@gmail.com - 2016-01-23 12:56 -0800
  Re: Milky Way's  Kinetic Energy in Our orbiting arm; this motion we share with the larger that is together with us jamesl51165@gmail.com - 2016-02-05 12:34 -0800
    Re: Milky Way's  Kinetic Energy in Our orbiting arm; this motion we share with the larger that is together with us shan <shan@enterapps.org> - 2016-02-05 22:12 +0000
      Re: Milky Way's  Kinetic Energy in Our orbiting arm; this motion we share with the larger that is together with us John Gogo <jfgogo22@yahoo.com> - 2016-02-05 14:19 -0800
        Re: Milky Way's  Kinetic Energy in Our orbiting arm; this motion we share with the larger that is together with us shan <shan@enterapps.org> - 2016-02-05 22:40 +0000
          Re: Milky Way's  Kinetic Energy in Our orbiting arm; this motion we share with the larger that is together with us jamesl51165@gmail.com - 2016-02-05 14:54 -0800
            Re: Milky Way's  Kinetic Energy in Our orbiting arm; this motion we share with the larger that is together with us Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-02-06 18:20 +0100
              Re: Milky Way's  Kinetic Energy in Our orbiting arm; this motion we share with the larger that is together with us jamesl51165@gmail.com - 2016-02-06 10:07 -0800
                Newtonian gravity vs. general relativity (was: Milky Way's  Kinetic Energy in Our orbiting arm; this motion we share with the larger that is together with us) Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-02-06 21:58 +0100

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