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Cosmos Explorer

Boyle-Turok CPT-Symmetric Universe

Time-Symmetric Cosmologies

Speculative, 2021 / 2024

Read about this theory

The three rings

Inner ring
The other variants of Time-Symmetric Cosmologies. A hollow square is historical or rejected.
Middle ring
The other families of Ch. 1, as their status shapes.
Outer ring
The other chapters. Those at the top are marked “Also answers this question”: this variant answers their question too.

The rings as lists