Nick James writes in the

Home Forums Comets gb00234, a bright interstellar comet? Nick James writes in the

#581679
Lars Lindhard
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Nick James writes in the December 2019 Journal that Borisov is the first confirmed interstellar comet.

I think I have read somewhere that the 1956 comet Arend-Roland came from (and went back to) interstellar space? Maybe that was just a guess?