Assertion: comet's magnitude | /r/CapableOf | see with naked eye
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Source sentences:
text: Borisov is expected to get to a peak magnitude of 16 or 15, which will be a factor of 10,000 times too faint to see with the naked eye, Professor Horner said.
text: Borisov is expected to get to a peak magnitude of 16 or 15, which will be a factor of 10,000 times too faint to see with the naked eye, Professor Horner said.