Abell 520: Dark Matter and Galaxies Part Ways in Collision between Hefty Galaxy Clusters http://chandra.harvard.edu/photo/2012/a520/
manjunath G's profile photo
If there would be the presence of dark matter or dark energy in the universe, which is why the reason for expanding universe,then even our solar system would be separated off including planets!!!!!!Why only the galaxies not the planets or stars inside the galaxies????what's the reason for expansion?????????Is there any force that governs all the fundamental forces in cosmos!!!
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