Timeline for Does Another Universe Where Time Runs Backwards Revive the Idea of a Cyclical Universe?
Current License: CC BY-SA 4.0
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| when toggle format | what | by | license | comment | |
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| Mar 3, 2020 at 18:25 | comment | added | Edouard | Black holes are observable only thru their effects, mainly the persistence of orbits still followed by stars that were their pre-collapse partners in binary pairs: Over 90 have been indirectly observed by those means. | |
| Mar 3, 2020 at 17:19 | comment | added | Edouard | The failure of early versions of cyclical universes was due to the fact that the density of entropy increases over time (-at least if the currently-conventional description of time as thermodynamic, rather than gravitational or electromagnetic, is valid), regardless of the direction of our passage thru time (which is often described, a little too simplistically, as the direction of time's own passage, which may not happen at all). That's why causal separation of the regions concerned, as described in the two cosmologies discussed in the top 1 of the PSE "related questions", is essential. | |
| Mar 1, 2020 at 0:55 | review | First posts | |||
| Mar 1, 2020 at 2:03 | |||||
| Mar 1, 2020 at 0:51 | history | answered | Stephen Smith | CC BY-SA 4.0 |