What is a black hole and how is it created?
What is meant by black hole?
Why do black holes have gravity? Are black holes and singularities related? Are black holes singularities? What is an event horizon of a black hole? Are we inside a black hole? Is Earth in a black hole? Do all galaxies have a black hole? Could the singularity of a black hole be a graviton? What is the event horizon in a black hole? Are black holes portals? Does something that goes into a black hole come out the other side? Does dark matter affect black holes? Is there any relation between black holes and wormholes? Are black holes like sink holes? Is there a singularity inside the event horizon of a black hole? Can a black hole be a worm hole? Can a black hole be compressed? Why do we study black holes? What is the diameter of black hole? Why can't we find a black hole? What happens to matter when it enters a black hole? Can we artificially create a black hole? What is the diameter of black holes? Which equation in general relativity predicted the existence of black-holes ? How small can a black hole be? Which is the best book to understand black holes? What is the difference between black holes and white holes? Would the singularity in a black hole affect dark matter? If so, in what way? What are some ways in which a black hole can disappear? What would be the implications if our universe existed within a black hole?