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== You Have Heard of BLACK HOLES! == ...e Sun remains after the explosion, it collapses to become a dense '''BLACK HOLE''', with so much mass and so much gravity, not even light can escape!

== Gravity Near Black Holes == ...ble to make an object so small that nothing, not even light, can escape. A black holes might look like this seen from a safe distance.

...nd indefinitely into the future, or fall back on itself into a giant black hole like a reverse Big Bang. He thought that the Universe should be stable and ...from the center of the galaxy. This means in addition to the central black hole, stars, planets, gas, and dust within the orbit, there has to be something