File:Big-crunch spacetime-diagram matter-dominated proper-distances.png

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    Summary

    Description
    English: Comoving worldlines (gray dashed), Lightcone rL (orange), Hubbleradius rH (blue), Particlehorizon rP (green) and Antipode rM (purple) in a closed universe (Ωm=2, Ωk=-1). Coordinates: proper distances r by cosmic time t (x=r, y=t). The Lightcone origin is at the turning point at Scalefactor a=2 and t=π/H0 when the Hubbleparameter H=0 and the universe is between expansion and contraction. The Big Bang is at the bottom and the Big Crunch at the top of the vertical t axis.
    Date
    Source Own work, relativity.yukterez.net/o/bigcrunch.html
    Author Simon Tyran, Vienna (Yukterez)
    Other versions
    big crunch universe (Ωr=2, Ωk=-1) proper
    big crunch universe (Ωr=2, Ωk=-1) comoving
    big crunch universe (Ωr=2, Ωk=-1) conformal
    big crunch universe (Ωr=2, Ωk=-1) polar
    big crunch universe (Ωm=2, Ωk=-1) proper
    big crunch universe (Ωm=2, Ωk=-1) comoving
    big crunch universe (Ωm=2, Ωk=-1) conformal
    big crunch universe (Ωm=2, Ωk=-1) polar
    closed inflationary universe (ΩΛ=2, Ωk=-1) proper
    closed inflationary universe (ΩΛ=2, Ωk=-1) comoving
    closed inflationary universe (ΩΛ=2, Ωk=-1) conformal
    closed inflationary universe (ΩΛ=2, Ωk=-1) polar
    flat universe (Ωr=1) proper
    flat universe (Ωr=1) comoving
    flat universe (Ωr=1) conformal
    flat universe (Ωm=1) proper
    flat universe (Ωm=1) comoving
    flat universe (Ωm=1) conformal
    hyperbolic universe (Ωk>0, ΩΛ=0) proper
    hyperbolic universe (Ωk>0, ΩΛ=0) comoving
    hyperbolic universe (Ωk>0, ΩΛ=0) conformal
    phantom energy (w=-2/3) proper
    phantom energy (w=-2/3) comoving
    phantom energy (w=-2/3) conformal
    big rip universe (w=-4/3) proper
    big rip universe (w=-4/3) comoving
    big rip universe (w=-4/3) conformal
    flat universe (Ωr+Ωm+ΩΛ=1) proper
    flat universe (Ωr+Ωm+ΩΛ=1) comoving
    flat universe (Ωr+Ωm+ΩΛ=1) conformal
    milne model (Ωk=1) proper
    milne model (Ωk=1) comoving
    milne model (Ωk=1) conformal
    milne model (Ωk=1) minkowski

    Licensing

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    Captions

    Spacetime diagram of a closed matter dominated big crunch universe, proper distances

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    16 January 2025

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    268,939 byte

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    3,840 pixel

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    Date/TimeThumbnailDimensionsUserComment
    current23:36, 22 January 2025Thumbnail for version as of 23:36, 22 January 20253,840 × 1,424 (263 KB)wikimediacommons>Yukterezaccidentally uploaded the wrong model last time

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