I think it must be infinite, but as a scientist you have to wonder it has to stop somewhere or is the whole universe spherical? As people used to believe there was an end of the earth. Unfortunately, we know the universe comprises of billions of different galaxys and at the moment we don’t have and I don’t think we will ever have the technology to explore even a hundreth of what is out there in space!
I think it is infinite. It would be pretty bizarre if we we able to explore to the outer levels of the universe and we just hit a wall. I like to think of it as the universe is constantly expanding, therefore we will never reach the edge of it as it is getting bigger faster than we are able to explore.
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