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elginz
- 4
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Average density of universe is 9.3 x 10^-27 Kg-mass/M3. Volume of Cubic-Light-Year is 2.7 x 10^25 M3. Result is .25 Kg-mass/CLY. If Dark Matter is 5 x ordinary matter then 1.25Kg-mass of Dark Matter per CLY. What if there was a billion times more Dark Matter in a galaxy than in the space between galaxies. Then there would be 1-1/4 billion KG of Dark Matter per CLY within a galaxy. Taking that an average asteroid’s density would be about 2500Kg/M3 this would result in an asteroid of a diameter of 100M. This currently is about the lower limit of asteroids we sometimes detect in our solar system. So why is it such a big mystery as to what comprises the missing (Dark) matter?(elginz)