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I didn't watch these particular videos but I'll bet I've heard all this stuff a dozen times before already as I've watched many similar shows.
Originally posted by johngtr
These links are for a documentary made by the bbc ( 5 part ) and covers a lot of theory and Science into the "start of the universe" and has a explanation as to how the "BIG BANG" Actually occurred. It also explains theory for the possibility of their being other dimensions ( 11 ) and many "possibly infinite" reality. The are a few " Experts " who give their theory and explain it in easy to understand terms with excellent visuals.
Untestable, just like the question about how many angels can dance on the head of a pin.....
In the realm of far out ideas in science, the notion of a multiverse is one of the stranger ones. Astronomers and physicists have considered the possibility that our universe may be one of many. The implications of this are somewhat more fuzzy. Nothing in physics prevents the possibilities of outside universes, but neither has it helped to constrain them, leaving scientists free to talk of branes and bubbles. Many of these ideas have been considered untestable
Oh joy, finally some evidence?
but a paper uploaded to arXiv last month considers the effects of two universes colliding and searches for fingerprints of such a collision of our own universe. Surprisingly, the team reports that they may have detected not one, but four collisional imprints.
The authors of the paper are quick to caution that these results are only consistent with the predictions of bubble universes but do not rule out other causes, or even simple blind luck from a large enough data set. To rule out other scenarios, astronomers will need to rely on instruments with higher sensitivity, such as the Planck satellite, launched in 2009, which working on completing a second scan of the entire sky with three times the sensitivity of WMAP.
To me, observational evidence to confirm theories is what science is all about.
If these results are confirmed, it would be support for a variation of cosmology known as “eternal inflation”. The title is somewhat misleading as the hypothesis doesn’t describe a single instance of inflation that continues eternally, but rather an eternal time period in which events of inflation, triggered by bubble collisions, can take place. Such collisions cause the rapid expansion of spaces forming universes like our own. Conversely, if a bubble is not found, “the conclusive non-detection of a bubble collision can be used to place constraints on theories giving rise to eternal inflation; however, if a bubble collision is verified by future data, then we will gain an insight not only into our own universe but a multiverse beyond.”