If there's an end to the universe,what's beyond it ?

I mean scientists say the universe isn't infinitely big..so there has to be a 'border' to it right?
What's beyond this border ??

just wondering :)
Update: @Stanton05 :
If the universe is expanding, what is it expanding into...?
what can possibly be beyond that 'edge' when the universe is technically 'everything'..?
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