- Noor Afsha
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My question is that how we knew about the mass of Sun?
i was thinking about the rotation of the heavenyl body and friction.
i dint get it that how friction is not affecting the rotation of the planets? and why there is rotation for these bodies for eternity?
for example, why Earth revolve on its own axis?
due to Gravitational Law>..
would any of you pleas help me to know that how we knew that there is mass of Sun?
m i sounding absurd?