How big the universe is?
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Nooby: "Whoaaa Look! We can see stars from this telescope" Mom: “Yes, Nooby, sure we can” Nooby: “Can we go there, mom?” Mom: “Not now, it is too far” Nooby: “How far?” Mom: “Too far that we might die before we reach the nearest star” Nooby: “die…?” Mom: “Yes, because it is too far. Ok Now, let’s close and get ready to sleep" but that night, Nooby keeps asking himself a question: Why can’t we go to one of the stars? where is the limit of the sky? where is the edge of this world? Then how big the universe is? Can I see it with the telescope? …