What is a black hole in the center of galaxies? Also, what is singularity?
Is there a black hole in the center of our galaxy?
Is the black hole in the center of our galaxy moving? Is there any galaxy with 2 black holes? Could the universe be inside a black hole? Is there a ring current at the event horizon of a black hole? Do we live inside a black hole? What are your views on black holes? May say they are portals to other places in universe. Is it possible? Do astronomers' know where the center of the universe is? Are there more theories for or against our observable universe (93 billion light years across) being inside a black hole? If you could reach the black hole center, would you just see a tiny black orb? Can we discover the center of the Universe? Is Earth in a black hole? Do we know in which direction the center of the universe lies? Could our universe be nothing more than a black hole? How fast is Earth revolving around the center of our galaxy? Can we travel through black holes? Is there any galaxy made up of only dark matter? Would be the black hole another universe similar to ours? Are we in a larger version of the outflow of a universal black hole? Does the Universe have a center? Is all matter in the universe on a course to become part of a single solitary black hole? How many black holes are there in the Milky Way? Could a black hole have planets orbiting it? Could there actually be something on the other side of a black hole? What would be the implications if our universe existed within a black hole? Is Earth a black hole? Is Milky Way near the center of the observable universe or close to the edge? Is it possible that black holes are portals to other universes? Is it possible to enter black hole? How do we know what we think are black holes aren't actually dark matter? Can a black hole be a worm hole?