1. Predict
Start from a specific claim about day and night, flights, Moon orientation, curvature, GNSS timing, or satellite passes. Each page names the globe prediction before any comparison begins.
Methodology
About TestTheGlobe.com
TestTheGlobe.com turns common flat-earth claims into checks you can follow: state the prediction, run the math, compare the models, and link the sources. The goal is not a slogan but a reproducible result.
Predict, compare, verify
Every finished page follows the same three-step evidence loop.
2. Compare
Keep the time, coordinates, and route endpoints fixed while the Earth model changes. Graphics and maps are built to show where the models diverge, not to hide it.
3. Verify
Use shareable URLs, visible formulas, observation guides, and external references so someone else can rerun or challenge the same check independently.
What you will find on a finished page
Final tools and debunks follow the same evidence pattern.
What you will find on a finished page
The Evidence Card on each page is the quick audit trail; the explanation and graphic sections show the work in more detail.
Claim
The flat-earth or globe prediction being tested, stated in plain language.
Model and formulas
The geometry, astronomy, or navigation math behind the page, with live values where possible.
Assumptions
What the page simplifies, ignores, or holds fixed so the comparison stays fair.
External sources
Primary references first: agencies, standards, observatories, airlines, and technical docs.
Falsification
What observation or model result would count against the page if it were wrong.
Version and changelog
Substantive fixes and improvements are tracked publicly on the changelog.
Who maintains the site
Who maintains the site
TestTheGlobe.com is maintained by Piet. Questions, corrections, and source suggestions are welcome through X @Piet_1337.
What the site is trying to do
Replace vague earth-shape arguments with transparent checks: formulas, maps, repeatable observations, and primary-source references that visitors can inspect for themselves.
How sources are ranked
How sources are ranked
When a page needs a reference, this is the order of preference:
- Primary technical or operator sources, official agencies, published standards, observatories, airlines, airports, and interface specifications.
- Neutral educational references, NASA, NOAA, USNO, ESA Navipedia, USGS, and similar public institutions.
- Secondary summaries only when needed, accessible explainers such as timeanddate.com or other overviews.
- No generic summary when a primary source exists, if an operator or technical document answers the question, that is what the page should cite.
Calculation and reproducibility standards
How calculations are built
- Geometry pages use explicit formulas such as haversine distance, horizon distance, hidden height, or Azimuthal Equidistant projection math.
- Astronomy pages use standard solar and lunar geometry, including NOAA low-accuracy solar equations where appropriate.
- GNSS pages use timing-range logic, dilution-of-precision geometry, and published satellite-navigation references.
- When a page uses a simplified comparison model, that simplification is stated on the page instead of being hidden.
Reproducibility standard
- The same coordinates, date, time, and route endpoints stay fixed while only the model changes.
- Pages expose enough math and assumptions that another person can rebuild the comparison.
- Observation claims should be repeatable without privileged access.
- Shareable URLs, visible formulas, and linked references are part of the evidence standard.
Correction and update policy
Correction policy
- Wrong formulas, sources, labels, or graphics are corrected directly and noted in the changelog.
- Overstated wording is weakened to match what the evidence actually supports.
- Stale sources are replaced with current primary references where possible.
Update policy
- Version numbers track substantive content, source, or graphic changes.
- Final pages should already be source-backed, visually readable, and methodologically clear.
- Verification dates matter on pages that depend on live schedules or current operator routes.
How to challenge a page
How to challenge a page
Disagreement is useful when it is specific. The fastest corrections usually include all four points below.
- Name the exact page and the exact claim you think is wrong.
- Point to the formula, assumption, source, or graphic that should change.
- Provide a primary source or a reproducible counter-example if you can.
- If the issue is modeling, explain which alternative model you propose and what it predicts numerically.
Source library
Source library
The full curated library lives on a dedicated page with relevance notes and backlinks to the tools and debunks that cite each source.
Open source libraryAstronomy and solar geometry
6 curated references
Geodesy and Earth shape
6 curated references
Navigation and GNSS
7 curated references
Flight operations and routing
6 curated references
Map projections and distances
5 curated references