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Oct 25 at 5:35 comment added Ghoster additional mass = c^2/10^53 $E=mc^2$ means $m=E/c^2$, not $m=c^2/E$.
Oct 24 at 16:26 history edited Qmechanic CC BY-SA 4.0
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Oct 24 at 16:05 answer added Sten timeline score: 1
Oct 24 at 15:33 comment added KierD The mass of dark matter required for galaxys to be stable is of comparable order of the mass of the regular matter in the galaxy. When you compare the equivalent mass of this rotational energy to the mass of the Milky way, it comes short by a few orders of magnitude
S Oct 24 at 15:29 review First questions
Oct 24 at 16:03
S Oct 24 at 15:29 history asked jamesraymond CC BY-SA 4.0