We know it's a big universe and we know it's an old universe. But how big and how old? We are not good at imagining the numbers that tell us the age and size. Our brains don't handle big numbers like millions, billions, trillions and the even bigger "illions." However, if we relate these numbers to things we can imagine, we have a much better chance of comprehending the size and age these numbers represent. Here are some interesting and fun...
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Teen & Young Adult