What Limits Exist?

What are the fundamental constraints or boundaries on this topic? Black holes are mysterious giants in space, and they come with certain limits that make them fascinating and challenging to study. One major limit is that light cannot escape from them. This means that we can't see inside a black hole directly, just like you can't see inside a closed box unless you open it. Another constraint is their immense gravity, which pulls everything nearby towards them, making it tricky to send spacecraft close to study them safely. The size of a black hole can vary greatly, but these sizes also limit how and where they form. Scientists can only observe their effects, like how a shadow tells you something is in its path. Imagine trying to figure out what a car looks like by only watching the shadows it casts as it moves. These boundaries are like puzzles we need to solve to understand black holes better.