patterns from spiral galaxies hint universe may have structure

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patterns from spiral galaxies hint universe may have structure

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Post by notFritzArgelander »


https://phys.org/news/2020-06-patterns- ... verse.html

This has interesting implications for the idea that the universe is homogenous and isotropic as Noether's theorem would require. The big question is "is there a length scale on which homogeneity and isotropy is restored"?
Scopes: Refs: Orion ST80, SV 80EDA f7, TS 102ED f11 Newts: AWB 130mm, f5, Z12 f5; Cats: VMC110L, Intes MK66,VMC200L f9.75 EPs: KK Fujiyama Orthoscopics, 2x Vixen NPLs (40-6mm) and BCOs, Baader Mark IV zooms, TV Panoptics, Delos, Plossl 32-8mm. Mixed brand Masuyama/Astroplans Binoculars: Nikon Aculon 10x50, Celestron 15x70, Baader Maxbright. Mounts: Star Seeker IV, Vixen Porta II, Celestron CG5
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Re: patterns from spiral galaxies hint universe may have structure

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Post by ThinkerX »


hmmm....time to humiliate myself again (and besides, Fritz needs a good laugh)

perhaps, in vastly oversimplified terms, 'Dark Energy' is merely kinetic energy?
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Re: patterns from spiral galaxies hint universe may have structure

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Post by notFritzArgelander »


Unfortunately that’s not going to work.

How different forms of energy scale with the expansion of the universe can be measured by the signal imprinted on the cosmic microwave background. Radiation scales like the inverse 4th power of the scale factor IIRC. Matter and kinetic energy as inverse 3rd. Dark energy doesn’t scale or if you want scales as 0th power.
Scopes: Refs: Orion ST80, SV 80EDA f7, TS 102ED f11 Newts: AWB 130mm, f5, Z12 f5; Cats: VMC110L, Intes MK66,VMC200L f9.75 EPs: KK Fujiyama Orthoscopics, 2x Vixen NPLs (40-6mm) and BCOs, Baader Mark IV zooms, TV Panoptics, Delos, Plossl 32-8mm. Mixed brand Masuyama/Astroplans Binoculars: Nikon Aculon 10x50, Celestron 15x70, Baader Maxbright. Mounts: Star Seeker IV, Vixen Porta II, Celestron CG5
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