To be fair, this comet isn't so much from the stone age itself, but that is the last time it was visible from the Earth.
For those of you who haven't been following this news story, there is currently a bright green comet passing through the inner solar system, and with any luck (and a bit of nice weather) will soon become visible to the naked eye.
Of course there are many comets passing by our solar system every year, but the the reason that comet C/2022 E3 (ZTF) is in the news is that it...
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