QUOTE:
Originally Posted by theking81
Wow seems very big and an intretsing thing to do is look at the universe.
I also think their may be life in the universe someware like on mars or maybe some were else i also wunder how old the universe actuarly is people says its so many years but how can they prove that?
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I could be wrong but i believe they know this as they can see the speed the universe is expanding and using this they can calculate how long (in reverse) it would take to fall back on itself. from this they also believe they know where the centre of the universe is!