File:Spacetime-diagram-closed-universe-proper-coordinates.png
Summary
| Description |
English: Comoving worldlines (gray dashed), Lightcone rL (orange), Hubbleradius rH (blue), Particlehorizon rP (green) and Antipode rM (purple) in a closed universe (Ωr=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=√2/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 |
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