Seriously Strange Matter…

“Dark matter…comes from the observation that galaxies should not be able to rotate at the speed they seem to rotate at based on their visible mass alone (and this is a huge effect – approximately 84% of the mass required for our observations seems to be invisible). It’s 23% of the mass-energy total in the universe. If dark energy is 73% and dark matter is 23%, then there’s only 4% left for the visible mass and energy in the universe, which is amazing.” Alex Kritchevsky

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