Empirical Earth · The Boomerangs — Flat-Earth Proofs That Backfire

The flat-earth apps that track the sky — and the globe math inside them

The claim

“Flat-earth apps track the Sun and Moon in real time, so the flat model must work.”

What is measured

A flat-earth app that works is a reprojection, not a calculation. It borrows the globe’s numbers and paints them on a disc. The moment an app stops borrowing and tries to build the sky from the disc alone, it stops matching the sky.

What would show this is wrong

any flat-earth app that computes the Sun and Moon from the disc alone, with no ephemeris and no globe-built positions, and still matches the sky across a year. The source code would settle it in minutes. So far every app that matches the sky reads the globe’s numbers, and every app that refuses to borrow them fails to match.

Sources

  1. Midnight Sun & polar night. Above the Arctic Circle (66.56° N) the Sun stays up 24 h at the June solstice while the Antarctic is in 24-h darkness; the boundary equals 90° − 23.44° axial tilt link
  2. Flat Earth Sun, Moon & Zodiac (Blue Water Bay). The proponent app promoted at flatearthdave.com/app ; its Sun path runs between the tropics, a range set by the 23.4° axial tilt. link
  3. Conceptual flat-earth model (open source). Source at github.com/AlanSpaceAudits/conceptual_flat_earth_model ; one ephemeris feeds both flat and globe views, with a Ptolemaic engine and a thr link
  4. Do-it-yourself flat-earth simulator. Source at github.com/fabiobrandespim/flat-earth ; moves the Sun and Moon on a fixed-radius circle, which cannot reproduce seasons or sunset. link
The full entry, with the working →

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