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Astronomers have observed a small, massive object at the centerof our Milky Way galaxy. A ring of material orbits this massiveobject; the ring has a diameter of about 17 light years and anorbital speed of about 250 km/s . Part A Determine the mass of the massive object at the center of theMilky Way galaxy. Give your answer in kilograms. Express your answer using two significant figures (inkilograms) Part B Give your answer in solar masses (one solar mass is the mass ofthe sun). Part C Observations of stars, as well as theories of the structure ofstars, suggest that it is impossible for a single star to have amass of more than about 50 solar masses. Can this massive object bea single, ordinary star? Part D Many astronomers believe that the massive object at the centerof the Milky Way galaxy is a black hole. If so, what must theSchwarzschild radius of this black hole be? Part E Would a black hole of this size fit inside the earth’s orbitaround the sun? . . .