Question

If the sun were to collapse into a black hole, what would the radius be?

Answer 1

It would be 1/3rd size of a neutron star

Step-by-step explanation:

the Schwarzschild radius would be about 3 kilometers; thus, the entire black hole would be about one-third the size of a neutron star of that same mass.

Answer 2

If the Sun, with its mass of 1 MSun, were to become a black hole the Schwarzschild radius would be about 3 kilometers; thus, the entire black hole would be about one-third the size of a neutron star of that same mass