View Full Version : Gravity in an Expanding Universe

2011-Mar-06, 11:36 PM
What effect does the expanding universe have on gravity? With light, we see a redshift caused by the distance between the peaks of the light wave increasing over time, and a dimming resulting from the distance of the object from Earth. But is there any effect on gravity beyond the "dimming" of gravity resulting from the inverse square law?

2011-Mar-07, 03:59 AM
If you disqualify the weakening of gravity force by the inverse square law as distances increase...
then you have nothing to work with. Gravity is a effect that mass has on the space near to it...
Crank the distance out and even a massive distortion will be lost to the finest of measuring equipment...
Its a pity we do not see gravity.. finding stuff would be simpler... if, but no.
Your opening question is a little more complicated by the seemingly weak force of gravity is only apparent where objects are
in a field of effect. Clumps of galaxies and clusters of stars. Galaxies and their contents are not tearing away...
The great expansion is weak at a local level. Weaker than gravity.

and might I bid the welcome... mark.