And a by product of this assumption is that "What happened before the Big Bang?" is a meaningless question. Because time as well as space began with that primal inflation, there was no "before".rjbrewer wrote: People tend to think of the "nothingness" that the universe expanded
into as a void, or empty space. There was no space, no time. Those
are products of the expansion and are created as the expansion
continues.
There are some interesting speculations currently that there was in fact a before, and we may be able to discover some things about it.
One is that we live in a multi dimensional hypercosmos, and our universe is one of a possibly infinite number of bubbles that are constantly being created and destroyed. We accept the concept of black holes, where enormous amounts of matter can be absorbed and compressed to pinhole size, creating a gravity well so fierce even light can't escape. A related concept is the white hole, with matter and energy mysteriously appearing seemingly out of nowhere. A possibility is that the Big Bang that generated our universe is a white hole, and the source was a super massive black hole in another cosmos.
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Dennis