I used the ##v^2=MG/R## to calculate mass of milky way.Now ##v=225000## m/s G=6.7 10(adsbygoogle = window.adsbygoogle || []).push({}); ^{-11}and r is 16 kpc source (https://upload.wikimedia.org/wikipedia/commons/7/77/Rotation_curve_(Milky_Way).JPG)

If I plut them I get ##50,625,000,000=v^2## and the other side G=6.6 10^{-11}and R =49.6 10^{19}so ##M=v^2R/G## thats equal 50,625,000,000/5.10^{20}.6.6 10^{-11}which its ≅ 1.534 10^{-3}

Whats the point which I am missing

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# Calculating mass of Milky way Galaxy

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