1 Galaxies are moving apart, with a velocity proportional to the distance between them.
2. The "Recombination Era" is when the electromagnetic and weak force combined into a single force.
3. Time appears symmetric under all forces except the strong force.
4. Stable orbits are possible if the number of space-like dimensions is greater than or equal to 1.
5. We know the age of the universe with relative certainty.