It’s not long now before we find out for sure whether Comet 3I/ATLAS is actually an intergalactic Trojan Horse sent to release tiny probes as it hides behind the Sun.

This highly unlikely theory has nevertheless been put forward by a controversial astrophysicist, and to be fair, at least it has focused attention on a fascinating object visiting us from another star system.

What is 3l/ATLAS and how big is it?

Dr Mark Norris, of Lancashire University, told Metro that there is no reason to think the interstellar comet has a technological origin, and it’s a shame that the idea has had so much traction, because it’s interesting enough as it is.

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