The center of Milky Way Galaxy allows us to determine (d) mass of the Milky Way Galaxy that lies within 40,000 light-years of the galactic center.
What is Kepler's Third Law (Orbital Velocity Law) ?
The Orbital Velocity Law states that the orbital velocity is directly proportional to the body's mass for which it is being calculated and inversely proportional to the body's radius.
orbital velocity is the speed at which one body orbits the other body .
The term "orbit" refers to an object's consistent circular motion around the Earth.
From the above data , we can conclude that ,
A star orbiting 40,000 light-years from the center of the Milky Way Galaxy helps us to determine the mass of the Milky Way Galaxy that lies within 40,000 light-years of the galactic center.
Therefore , the correct option is (d) .
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