- #36
Jaime Rudas
- 194
- 67
Yes, but 6.3 Gyr isn't something like a "short time", even on cosmological scales.Halc said:Exactly so. So my labeling it as coincidence was more "not enough time for the two values to differ much".
No, it isn't. The curve marked as v=c/2 isn't a world line, but a curve that denotes the behavior of the Hubble parameter H, which is monotonically decreasing. The world lines are shown on the left side of the graph, where in the world line marked as ##r_0=8## Gly a slight change in curvature can be noticed about 6 Gly ago.Halc said:My chart is also misleading since it seems to be older than the discovery of dark energy. Look at the v=c/2 worldline in my post4. It curves left the whole way, but after about half the age of the universe, dark energy became dominant and that worldline should start curving right, putting the current proper distance to it far larger than what this old picture shows.
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