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Does Space Really Go on Forever?

It's an existential question most of us have probably pondered at some point: is space infinite? It's tricky to answer because there's not just one kind of infinity to consider. Even if the universe goes on forever, it may not be infinitely large. It could be bounded like the surface of the Earth, allowing you to travel indefinitely without ever finding an edge.


Read the rest of the article at NewScientist.