Quote: the galaxy is not a ball because of angular momentum; it must contract mostly in a plane

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The shape of this galaxy indicates an obvious … " … but why is it not just a ball?" … it must contract mostly in a plane. … [p. 7-8] so far as we now know, gravity … [i.e., the force on a spherical shell is constant with increasing radius].   Google-1   Google-2

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Quote: gravity apparently goes forever inversely as the square of the distance; i.e., the gravitational force on a spherical shell is independent of its radius

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Topic: physics (48 items)