What is sculpting the Milky Way into its beautiful spiral shape? - TopicsExpress



          

What is sculpting the Milky Way into its beautiful spiral shape? Scientific American refers to the Invisible Hand of Dark Energy (which is fine tuned to within 1 part to 10^120). The Universes Invisible Hand - Christopher J. Conselice - 4 August 2014 Dark energy does more than hurry along the expansion of the universe. It also has a stranglehold on the shape and spacing of galaxies Excerpt: it now appears that dark energy may be the key link among several aspects of galaxy and cluster formation that not long ago appeared unrelated. The reason is that the formation and evolution of these systems is partially driven by interactions and mergers between galaxies, which in turn may have been driven strongly by dark energy.
Posted on: Sat, 06 Dec 2014 00:32:32 +0000

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