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Simply Noor

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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?

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    May 25 2012: Will to have friction you would need to have something acting on that object. But seeing that space can be bent by the stars and planets mass there can not be friction. Its all in the theory of relativity.
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      May 26 2012: HE Jerry.... what is causing the gravity?
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        May 26 2012: Gravity is the effect of mass, things with a larger mass attract those with a smaller mass, this is created by matter's currently theoretical effect on the Higg's Field
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          May 27 2012: those with a smaller mass attract those with a larger mass as well
        • May 29 2012: Specifically, all objects with mass are attracted to ALL other objects with Mass. Closer and more massive objects have a more dramatic effect. The force of gravity is generally a very weak one, compared to the other known forces (electromagnetism, weak nuclear, and strong nuclear).

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