Recently I have been researching black holes, and came across the "Schwarzschild Radius". The wikipedia page on Schwarzschild radius's mentioned that the Sun has a radius of 3km. If that is so, then how can that be so, as that would mean that light cannot escape it. So when it said "3km", did they mean that the radius was 3km, or that the radius is 3km larger than that of the sun? - James Edit: This is my first post and I am not used to the way forums work, so if i have gotten something wrong then please excuse me.