Black holes are created when a large star (one that is much bigger than our sun)star dies, but it can also become a neutron star. What happens when a large star dies is that inside it compresses because it no longer has any energy to feed on, so it begins to shrink. The protons and electrons don’t like to be very close together, so they push back against gravity and if gravity wins, it becomes a black hole. if protons and neutrons win, It becomes a neutron star. They are also very tiny, In comparison of mass to size, it would be like being able to put mount Everest in your water bottle!
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