I do not know the rate at which the universe is expanding, but I think it is big enough since even the stars are affected in a way we can measure this expansion. Just thought of this now... if the stars are affected, and we can measure this expansion so it means that it can be perceived, but we need some equipment, that is not something that can be perceived by naked eye.
Re: A philosophical Question
Originally posted by kingkman
If at a given time every living animal in the universe was asleep at the same time and while they were asleep everything in the universe was expanded by the same scale, do you think when they woke up they would be able to tell the difference?
well technically nothing is ever "fully" asleep. So technically something would change, which would make something else change and before you know it the animal has changed to match it's surroundings. And when they wake up, they wont be able to tell the difference.