What Happens When You Test a Flat Earth Sun Prediction?

In this video, I put a common Flat Earth claim to the test using real data, real measurements, and real photos.

Flat Earth models often suggest that the sun is small, local, and hovers just a few thousand miles above a flat plane. That idea leads to a testable prediction: if the sun is moving away from the observer throughout the day, it should appear smaller in the sky due to perspective.

I used two sun photos I took on August 29, 2024 — one at 10:21 AM, the other at 12:26 PM (just before solar noon). Then I calculated the sun’s predicted distance at both times using Pythagorean theorem for several assumed heights (from 100 to 500,000 miles). Finally, I applied the inverse square law to see how much smaller the sun should appear if Flat Earth geometry were accurate.

Spoiler: The results were... not great for the Flat Earth model.

📐 Tools used:
– Geographic sun position data
– Pythagorean distance calculations
– Inverse square law for light and angular size
– Pixel measurements from actual photographs

🧪 Flat Earth Prediction Tested:
“If the sun is moving away over a flat surface, its size should shrink dramatically with distance.”

📸 Actual Result:
Measured pixel change was ~0.3% — far smaller than the 20–40% drops predicted by the flat model.

Want to check my work? Good! I encourage you to test this yourself. Measure, document, publish. If I’m wrong, show me the numbers.

Question the claim. Test the evidence.

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