What is the physical size of a 1-billion-solar-mass black hole compared to the Sun?

When a supermassive black hole is measured as 1 billion solar masses, what would be its actual physical size relative to the size of our Sun? Joseph De BenedettoOxford, New Jersey The size of a black hole is generally taken to be the size of its event horizon. The event horizon is a mathematical boundaryContinue reading "What is the physical size of a 1-billion-solar-mass black hole compared to the Sun?" The post What is the