If the universe is always expanding, what is it expanding into?

A giant bowl of spaghetti. Carbo diem!

to seqdeha: where do you find this stuff?

Sometimes the simplest questions are the hardest to answer. This one peobably won’t be answered for a couple hundred more years (if we’re still around), if ever.

At the moment, I suspect that we’re content to say that it is expanding into an endless vacum. Almost certainly wrong though.

@xacrox, The internets. It’s a series of tubes.

Did you see the “teach” advert in the UK?

To Tennis5tar – Yes I got that question off that advert I thought it was quiet a good question so I through it out there. Thanks guys n girls for the responses pretty intresting stuff

All edges of the expanding universe are curving down to meet themselves like water pouring over a sphere. When they meet, the universe will become a ten-dimensional sphere. At this point our universe will collapse in on itself, then explode outward in a giant supernova that will create an infinite number of new universes. (The big bang again).