A thought experiment.
The Schwarzchild radius is the distance to which an object of a given mass must be compressed before it’s surface gravity would disallow the escape of light. That is, it is the size to which an object of some mass M
must be compressed before becoming a black hole. It is given a definition as follows:
r < M * 2G/c^2
Where r
is the Schwarzchild radius, M
is the mass of the object, G
the gravitational constant of the universe, and c
the speed of light. We can some up with the minimum r
by simply asserting this inequality as an equality and solving.