Maybe I’m misinformed about this. But I was always told matter cannot be destroyed or created. But I have been told space is constantly expanding. Is this expansion of space not made up of “matter”? Where does it come from?
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Mass is Energy, you can change between the two. The “edge” of the universe is unperceiveable though if one does exist it’s just how far something travelling at the universal speed limit (also known as the speed of light) could reach if it existed since the start of time, since space is the lack of stuff something must have travelled through it for it to be emptied.
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