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Yes, I understand that WIRED magazine is not exactly a prestigious scientific joournal, but my dad did find an article in it that puzzle him. he gave it to me to see if I could make any sense of it. The article in its entirety can be found here. Here are some snippits:
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It goes on like this, essentially saying that all of today's cosmology is wrong, but without citing any sources. Has anyone else seen this and care to comment? if not, it's a rather short article, go ahead and check it out. |
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I saw Max Tegmark speak last week on the recent SDSS data. The best evidence continues to suggest that spacetime is flat, or nearly flat, overall. In fact Tegmark said spacetime may be perfectly flat, but the data is not yet clear enough to say for sure. As Phil notes, that's not a comment on local spacetime topographies. Indeed, as Max pointed out, the SDSS data
interpretation rests on the assumption that General Relativity is true. Inflation models of the universe predict that spacetime is flat. This is an important feature of inflation theory since if spacetime is flat, then total energy equals zero -- the negative energy of the gravitational field exactly cancels the positive energy of mass. This could explain how a universe could spring forth from nothing without violating the conservation of energy. So "nothing ((+) + (-)) from nothing" may leave universe. ![]()
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Goddard's Journal |
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Perfect flatness corresponds to a spectral index of 1 (Omega = 1) as seen in this graphic. The area in white is the region of possibility, all colored regions are ruled out by the WMAP and SDSS data. The possible region is considered to be "nearly flat." The data should continue to tighten up over time, but at this time essentially all the data on the question of universal geometry indicates nearly flat spacetime. See Max Tegmark's SDSS page, he's one of the leading scientists working on this issue. The graphic I just discussed is the second on that page. Krauss, Lawrence. "Cosmological Antigravity." Reprinted in Scientific American (Special Edition, "The Once and Future Cosmos"), Dec 31, 2002. 31-39.
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Goddard's Journal |
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Check it out, Professor Wright whose Spatial Curvature page I just linked to has several pages debunking bad cosmology: Cosmological Fads and Fallacies
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