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Originally posted by jkrog08
reply to post by theflashor
Google Sky is not the proper tool for Cosmological observations. The spherical appearance of the sky as viewed from Earth is called the Celstial Sphere. Now you are not alone in thinking that the Universe may be contained with-in another Universe, or more correctly a multi-verse commonly called the "Bulk" or "Hyperspace" by Cosmologist and Theoretical Physicist. It is unknown rather the Universe is flat or spherical at this time however.
If you apply M-Theory than you might think that a membrane is tethered to our Universe by a unseen 6 or 7 microscopic dimensions. This membrane is a multidimensional "membrane" or highly energetic matter. This membrane and others (other universes) exist in a 11 (possibly) dimensional bulk or hyperspace(semantics). Universes' in this theory are flat and infinite.
If you are in favor of the spherical, "bubble shaped universe" then you would believe that our Universe is one of many of infinite size that are "floating" around in the bulk or hyperspace( the eleven dimensional space I spoke of above). Universes' in this theory are created by "Bubble Nucleation" as opposed to the "brane clashing" of M- Theory. In this way univserses’ pop in and out of existence, bud other universes out of themselves and so on. It is analogous to a "fractal tree".
The real question becomes IMO what created the bulk???
Good question though, hope this video and links help!