Research
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Gravitational waves that have been detected after the Big Bang suggest to us that one universe may not be enough. These waves tell us that there may have been some form of inflation(distend with air or gas), and the process that inflates a universe looks too potent to happen only once. All of the observations that we have taken of our own universe such as different life forms are informing us that there must be multiple universes. There may be many universes that stretch all the way out to infinity. These universes may be separated by unimaginable distances.