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Humans have a long history of looking to the stars. As a race, we have curious fascination with the unknown: the vast expanse of space is about as unknown as you can get. Modern telescopes have expanded our view, but the universe hasn’t given up all of her secrets yet.

One of the most basic features of the universe, its size, is still an enigma. As we look up above, we can see lots of darkness peppered with stars. We know that it is big, but how big is it? Well, scientists don’t always agree. The trouble is that we can’t see that far.

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