Could the universe be inside a black hole?
How do we know we are not living in a black hole?
Why can't we find a black hole? Is a black hole really a hole? What is still unknown about black holes? Can you survive a black hole? What is it like in a black hole? What are some ways in which a black hole can disappear? Can another black hole exist in a black hole? What is a black hole? What is a black hole? Can we kill a black hole? Can a black hole die? Why or why not? What is the concept of black hole? Can a black hole be moved? How do you make a black hole disappear? Is it possible to have the event horizon of a black hole without a singularity? Why do we study black holes? How can we see black holes if light does not escape? Doesn't this mean that the hole does not reflect light? What might have happened if we survived the black hole? What does a black hole look like? What is the theory of black hole? How small can a black hole be? Where can I see a real picture of a black hole? What are the survival chances of Earth having a black hole near? Recently I read a theory which stated that we are in a black hole which is constantly expanding. Is this a reasonable theory or is it utterly false? How will a black hole get destroyed or die? What is beyond a black hole? What happens to the matter that forms a black hole? What happens if a black hole die? Is anything left behind after a black hole dies? How can we see black holes if light does not escape? Doesn't this mean that it does not reflect light?