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A comment on Which stars can see Earth as a transiting exoplanet?. Parent comment

Re:Which stars can see Earth as a transiting exoplanet? by perihelions on Wednesday October 27, 2021 @08:43PM (#29020958)
And the CFC's would be definitive proof.

https://arxiv.org/abs/1406.3025

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Re:Which stars can see Earth as a transiting exoplanet? by RosanaAnaDana on Wednesday October 27, 2021 @09:33PM (#29021282)
Yeah, but you might not be looking for those specifically.

Oxygen however. Just the fact that our atmosphere is as far out of equilibrium as it is.

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