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Might our universe – as vast as it is – be simply one of many? We look at the growing evidence that there’s more than one cosmos out there
While our planet only has one easily visible Moon, several other tiny objects arguably deserve the title too
When comet 3I/ATLAS was discovered in July, on a one-way interstellar journey through our Solar System, Harvard astronomer Avi Loeb suggested it might be an alien spacecraft paying us a visit. Back in
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Exciting ways to get away from it all