Why are the sun and other stars so large?

1 Answer
May 3, 2016

The large mass of a star provides enough magnitude to its centripetal force for maintaining every near and, importantly, the far distant orbiters of its system, in the respective orbits.

Explanation:

It is the centripetal attraction from the a star that keeps every space body of the star-system in an orbit, around the star. This force varies directly as the mass of the star and is also proportional to #1/(distance)^2#.

So the large mass of the star provides enough magnitude in the force for maintaining the far distant constituents of its system in the respective orbits. As a matter of fact, the mass of a star mass is one of the parameters that decides the edge of its system

Sun's mass is about 330000 X Earth's. .