Let's say the universe is not being pulled apart. What would cause us to think that and see that even though it's just an illusion?
Assuming you mean expansion, then another explanation for redshift would be required. This was given strong consideration in the past, and you can look-up “tired light” to learn of its merits. But it was debunked.Let's say the universe is not being pulled apart. What would cause us to think that and see that even though it's just an illusion?