Like part of a cosmic Russian doll, our universe may be nested inside a black hole that is itself part of a larger universe.

In turn, all the black holes found so far in our universe—from the microscopic to the supermassive—may be doorways into alternate realities.

According to a mind-bending new theory, a black hole is actually a tunnel between universes—a type of wormhole. The matter the black hole attracts doesn’t collapse into a single point, as has been predicted, but rather gushes out a “white hole” at the other end of the black one, the theory goes.

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It was the end of April and the Hubble telescope in space was 20 years old.

No one ever suspected, the presence of the Hubble telescope has answered the most fundamental human questions about the formation of universe, the solar system, Earth, and particularly human origin. “The key was the finding that new stars are born containing the same chemical element with the compiler of the human body,” said John Grunsfeld, a former astronaut who three times follow the Hubble telescope repair mission, told CNN.

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