Thursday, September 11, 2014


Read a piece entitled Interactive dark matter could explain Milky Way’s missing satellite galaxies over at the Royal Astronomical Society. The brief article talks about the discrepancy between computer simulations and observations. We see far fewer small galaxies around our spiral home than what the predictions say. One suggestion is that dark matter was scattered in the early Universe due to interactions with photons and neutrinos and gravity. Microscopic particles affecting large structures. When the scientists tune the simulations to allow dark matter to interact they see fewer neighbouring satellite galaxies. Smoother. Less lumpy.

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