I am only just begining to learn about black holes and I don't understand, if they keep sucking more and more matter in, how they cannot continue to grow in size. How can there be little black holes and massive black holes if they can't keep growing. If there is a maximum size, what is it and why does it stop growing? What happens to matter when it is in a black hole? Does it all clump around the centre of the black hole, being more dense as gravity becomes stronger? From reading texts, I have gathered that somehow it just 'disappears'. How can the universe continue to grow? Isn't it just a constant size?

From ME, dearest Elizabeth.