Within ourobservableuniverse, inflation ended long ago.
2
One scenario, called the ekpyrotic universe, is based upon the hypothesis that ourobservableuniverse came into being when two branes collided.
1
Yes, well ultimately we'd like to understand theobservableuniverse.
2
We talk about Copernicus, Einstein, Hubble, multiverses, theobservableuniverse, the speed of light and the elements.
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We are not merely legion-we rival in our numbers the stars of theobservableuniverse in the current epoch.
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A top theoretical contender is gamma-ray bursts, equally mysterious cosmic explosions that can briefly outshine everything else in theobservableuniverse.
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That's a one with 21 zeroes after it-over50 times the number of stars in theobservableuniverse.