
According to NASA, a black hole is a place in space where gravity pulls so much that even light can't get out. The gravity is so strong because matter has been squeezed into a tiny space.
If the sun were to turn into a black hole, humanity would not fall in; instead, we would all freeze to death. The black hole that was the sun would not emit any light or heat, so we would be in a pitch-black world with freezing cold temperatures.
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