Cosmo Novice
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bill alsept said:
What do you mean by time changing charecteristics? Are you just paraphrasing gravitational time dilation or do you have a different meaning?
If the universe is expanding, what is it expanding into?
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What do you mean by time changing charecteristics? Are you just paraphrasing gravitational time dilation or do you have a different meaning?
bill alsept
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Cosmo Novice said:
As in post #9 above
bill alsept
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Drakkith said:Phind's post is describing normal time dilation. It's less confusing if you just use that term instead of "time changing characteristics".
Thats where I got the term from. I didn't come up with it. Thats why I was asking.
Deuterium2H
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As has already been pointed out previously in this thread by contributors...the physics describing our Universe does NOT allow, nor require another "hyper" dimension in which it expands. The curvature of our Universe is an intrinsic property, and does not require higher dimensions (again, as has already been noted).
The simplest and most succinct explanation, IMHO, comes courtesy of Proffessor Edward Harrison. "The Universe contains both Space and Time, and does NOT exist in Space and Time". In other words, our Universe contains everything that is physical, and nothing that is non-physical. Space and Time are physical constructs that exist within our Universe.
Also, in accordance to the Location Principle, as well as the Containment Principle and the Cosmological Principle, there is no boundary or "edge" to our Universe. The expansion of our Universe (change in Scale factor) is an intrinsic property, and is "self-contained" and self-consistent. Since our Universe contains all of "Space", there is no "external" space within which the Universe expands into. Instead, our Universe consists of expanding space.
The simplest and most succinct explanation, IMHO, comes courtesy of Proffessor Edward Harrison. "The Universe contains both Space and Time, and does NOT exist in Space and Time". In other words, our Universe contains everything that is physical, and nothing that is non-physical. Space and Time are physical constructs that exist within our Universe.
Also, in accordance to the Location Principle, as well as the Containment Principle and the Cosmological Principle, there is no boundary or "edge" to our Universe. The expansion of our Universe (change in Scale factor) is an intrinsic property, and is "self-contained" and self-consistent. Since our Universe contains all of "Space", there is no "external" space within which the Universe expands into. Instead, our Universe consists of expanding space.