Two stars in a binary system orbit around their center of mass the centers of the two stars are 7.17 multiply 10 to the power 11 apart The larger of the two stars has a mass of 3.7 x 10 to the power 30 kg is 2.08 multiply 10 to the power 11 from the system center of mass what is the mass of the smaller star

Neptune is the eighth planet from the sun. it was the first planet to get its existence predicted by  mathematical calculations  before it was actually seen through a telescope on sept. 23, 1846. irregularities in the orbit of  uranus  led french astronomer alexis bouvard to suggest that the gravitational pull from another celestial body might be responsible. german astronomer johann galle then relied on subsequent calculations to   spot neptune via telescope. previously, astronomer galileo galilei sketched the planet, but he mistook it for a star due to its slow motion. in accordance with all the other planets seen in the sky, this new world was given a name from greek and roman mythology — neptune, the roman god of the sea.