How will you weight the sun, i.e., estimate its mass ? You will need to know the period of one of its planets and the radius of the planetary orbit The mean orbital radius of the earth around the sun is 1.5 x ${{10}^{8}}$ km. Estimate the mass of the sun.
It is dear that earth revolves around the sun in an orbit of radius 15 x {{10}^{11}} m and completes on revolution around the sun in 365 days.
