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Before beginning this class, I never really quite thought about or questioned what the ideas of "space" and "time" meant in relation to the universe (which was a much more complex and intricate concept than I thought before) and this week made me further question what was the end points of the universe.

I always accepted the idea that the universe is comprised of stars and various matter orbiting in space and that there is no quite definite beginning or end. The universe always seemed to be just a blurry concept to me and I never questioned what the exact length of it is.

I'm the type of person who needs an exact number in order to fully visualize what that length looks like, but the fact that the universe is a certain billion light years in diameter just startled and confused me. It just made me think: What is out there if the universe has a specific beginning and end? Just space?