So time and space only matter in this universe? What about other universes? What about possible parallel universes?


>>Hilmar
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>>eternity can't have a first second.
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>Well, that is an old story, which I found interesting.
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>Anyway, "eternity can't have a first second" - this assumes that eternity goes into both directions (past and present).
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>Current theories of the Universe propose that it started some 15,000 million years ago. At that moment (the moment of the Big Bang) - according to some - the Universe started to exist. This includes not only matter, but also space and time itself! In other words, time itself could have had a beginning.
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>Of course, there are other theories according to which this is only a part in an even larger structure, which (in several theories) would be outside of what we can grasp with our senses or our instruments.
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>At one moment, it was thought that the Universe, which is currently expanding, would some day contract, placing a limit to "eternity". However, recent observations found that the expansion of the Universe is actually accelerating, as if there was some sort of "anti-gravity" on a large scale. In this case, there would be no end to time (into the future), although the Universe would get quite empty after a while.