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[-] magic_lobster_party@fedia.io 46 points 6 days ago

The existence of the North Pole star and the Southern Cross is enough evidence that the earth is round. On a flat earth, you should see the same constellations no matter where in the earth you are.

The Southern Cross was so important for celestial navigation on the southern hemisphere it’s in multiple flags (Brazil, Australia and New Zeeland, for example).

[-] Artyom@lemm.ee 4 points 6 days ago

Yup, all it takes is a single set of eyes, even a mediocre sence of direction, and a decent memory for stars on the celestial sphere for one person to definitively prove the Earth is round. If you can accurately measure stars, you don't even need to do Erastosthene's challenge with the sun.

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this post was submitted on 15 Feb 2025
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