Take the 2-minute tour ×  The origin of spin is some what a
puzzle to me, everything spin from galaxies to planets to
weather to electrons.  Where has all the angular momentum come
from? Why is it so natural?  I was also thinking do photons
spin? we always think of the wave as a standard 2d sin wave but
could this rotate in 3d? What implications would this have?  And
what about spacetime how does all the spinning effect?  This has
always been avoided in all lectures and classes I ever went to.
share|improve this question Re: waves, see
en.wikipedia.org/wiki/Circular_polarization –  Willie Wong Jul
11 '11 at 0:07 Your question is not entirely "true"! Elliptic
galaxies do not spin. Same is for the central bulge of spirals
galaxies afaik. –  Georg Jul 11 '11 at 12:50 add comment  4
Answers  Sticking strictly to classical mechanics, things in
space are all moving, in different directions. They are not
standing still. You could ask why are they not standing still,
but I guess that's cosmology.  Suppose two cars p