Is something eating the universe? (Black holes)
Mysteries of Science
Do Not Pass the Event Horizon, You Just Can't Escape
Emily is an expert on black holes, and she says that they're formed from collapsed stars. So a star produces some energy at its center that creates a lot of pressure. And then you have gravity that tries to hold the star together. But when a star dies, it stops producing all that energy and gravity takes over. It becomes smaller, smaller and smaller and denser and denser. In some cases, it gets to the point where all the mask gets concentrated in a tiny, tiny place of space. That forms a black hole.
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