Category: Round-earthers cited by the flat

The list below is believed complete, though membership — like everything here — is subject to revision.

• George Biddell Airy — The Astronomer Royal whose 1871 aether experiment was rebranded 'Airy's failure' and conscripted, posthumously and without consent, as a flat-earth proof.
• Tycho Brahe — Danish astronomer (1546–1601) whose geo-heliocentric system kept the Earth central while agreeing with the sky exactly — the Concordant Orrery's trick, three centuries early.
• Nicolaus Copernicus — Renaissance astronomer (1473–1543) who set the Earth in motion around the Sun — the geocentric and flat traditions' founding antagonist — and published as he died.
• Eratosthenes — Greek polymath (c. 276–194 BC) who measured the Earth's circumference to within a few percent — the figure whole-radian geometry declines to address.
• Johannes Kepler — German astronomer (1571–1630) who found the planets move in ellipses, after first building a lovelier, wrong model of nested Platonic solids; a founder of modern optics.
• Ernst Mach — The arch-empiricist whose principle the aetherists kept and whose scepticism the flat-earthers mistook for permission — the man who doubted the atom, claimed by those who doubt the curve.
• Isaac Newton — English natural philosopher (1643–1727) whose universal gravitation the flat-Earth tradition never forgave, and who spent as much effort on alchemy and biblical chronology as on physics.
• Ptolemy — Alexandrian astronomer (c. 100–170 AD) whose Earth-centred cosmos held for 1,400 years — its central Earth, to his admirers' inconvenience, a sphere.
• Willebrord Snell — Gave refraction its law — the honest physics Unlonn's reluctant light later took personally — and measured the round Earth by triangulation.
• Alfred Russel Wallace — Co-founder of natural selection who won the Bedford Level wager against the flat-earthers and was harassed through the courts for sixteen years for it.

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