Is there a black hole at the center of every galaxy?
Why is there a black hole at the center of every galaxy?
Is the black hole in the center of our galaxy moving? Is there any galaxy with 2 black holes? Does the Universe have a center? Why do black holes have gravity? Is Earth a black hole? Is there any galaxy made up of only dark matter? Do astronomers' know where the center of the universe is? Is Earth in a black hole? Does our universe exist inside a black hole? What is the shape of a black hole? Are we inside a black hole? Could our universe be nothing more than a black hole? If you could reach the black hole center, would you just see a tiny black orb? Does universe have a center of mass? How is it possible for the center of a black hole to be infinitely dense, that is, a huge amount of mass occupying zero volume? Is there a center in the universe? If so, do we know where is it? Is all matter in the universe on a course to become part of a single solitary black hole? Could the universe be inside a black hole? What is the temperature at the center of a black hole? Is there a singularity inside the event horizon of a black hole? Is there a ring current at the event horizon of a black hole? Why do many spiral galaxies form a bar in the center? Why is outer space black? Could this universe be inside a black hole? Do we live inside a black hole? How fast is Earth revolving around the center of our galaxy? What is a black hole made of? When scientists say a galaxy is 99% dark matter are they referring to the state of displacement of the dark matter? How do we know what we think are black holes aren't actually dark matter? Why can't we find a black hole?