There is no cutoff to visibility at Earth’s orbit. (What Myhrvold said Mainzer said.) Are you saying there is?
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Self-evident indeed. So isn't Venus, for most of the night, except for just before sunrise and after sunset. Guess why? /1
Yes, but it is visible at times. Nathan is saying Amy said nothing within Earth orbit can be seen in night sky.
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No way to verify and I'm sure Amy would remember exchange differently. And Nathan used Venus as a counterexample.
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It is a fact that *nothing* inside Earth's orbit is seen in the night sky except for few mins after sunset & before sunrise.
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