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A comment on A Candidate Giant Planet Imaged in the Habitable Zone of α Cen A. Parent comment

Re:A Candidate Giant Planet Imaged in the Habitable Zone of ... by andrewflnr on Wednesday August 06, 2025 @11:15PM (#44820217)
What are the numbers for the temperature Earth would have without any greenhouse gases? The right atmosphere might make it work.
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Re:A Candidate Giant Planet Imaged in the Habitable Zone of ... by dvh on Thursday August 07, 2025 @01:25AM (#44820901)
-19°C
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Re:A Candidate Giant Planet Imaged in the Habitable Zone of ... by AlecSchueler on Thursday August 07, 2025 @05:02AM (#44822238)
Huh that's surprisingly warm!
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Re:A Candidate Giant Planet Imaged in the Habitable Zone of ... by SJC_Hacker on Thursday August 07, 2025 @07:57AM (#44823333)
Keep in mind these calcs discard the the greenhouse effect, but not the albedo, which reality can’t happen since the same factor is causing both
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