What is meant by black hole?
What is called a black hole?
What does a black hole look like? What is it like in a black hole? What is a black hole singularity? Why are black holes black? How are black holes formed? How black holes are formed? Can a black hole be a worm hole? How powerful is a black hole? What is the size of a black hole? Can a black hole be created inside a black hole? Are we inside a black hole? Is Earth in a black hole? Are black holes singularities? Can a black hole be compressed? What is a black hole in the center of galaxies? Also, what is singularity? Why do black holes have gravity? Can we artificially create a black hole? Do all galaxies have a black hole? What is an event horizon of a black hole? What is the diameter of black hole? How small can a black hole be? Are black holes and singularities related? Are black holes like sink holes? Is there any relation between black holes and wormholes? Does something that goes into a black hole come out the other side? What is the diameter of black holes? Are black holes portals? Could the singularity of a black hole be a graviton? Do we live inside a black hole? Is it possible to create an artificial black hole?