Eddington limit

The Eddington limit is the maximum brightness a celestial object like a star or black hole can have without blowing away its own material. At this limit, the outward pressure from the energy and light produced balances the inward pull of gravity. If it becomes brighter than this, the radiation pushes matter away faster than gravity can pull it in, regulating the object's growth. This concept helps explain why some stars and black holes don’t grow indefinitely—they reach a natural cap set by this balance between radiation force and gravity.