- camera or phone capable of a long-exposure or stacked night-sky shot
- tripod
- clear southern sky
- location in the Southern Hemisphere or a trusted southern-sky time-lapse dataset
Experiment
Southern Star Trail Rotation
Do long-exposure southern sky photos circle a southern rotation center as globe geometry predicts?
Materials Needed
Setup Steps
- Aim the camera toward the southern sky and record a long exposure or stacked time-lapse.
- Keep the camera fixed so the stars draw trails instead of being tracked.
- Look for whether the trails bend around a stable southern rotation center rather than around Polaris.
Expected Calculation
On a globe, the visible sky rotation center depends on latitude and hemisphere. Southern observers should see star trails circle the south celestial pole rather than the northern one.
Graphic
This visual shows the core geometry the experiment is testing before the real-world observation is made.
What to Observe
- The trails arc around a southern point in the sky instead of around Polaris.
- The rotation direction is opposite the familiar northern-sky view.
- The center shifts in height with southern latitude in the expected way.
Interpretation
That hemisphere-dependent sky rotation is a direct globe prediction and a major problem for a one-dome flat-Earth sky story.
Sources
Evidence Card
Claim
Do long-exposure southern sky photos circle a southern rotation center as globe geometry predicts?
Model Used
The experiment’s stated geometry or physical model with fixed inputs across comparisons.
Formula
On a globe, the visible sky rotation center depends on latitude and hemisphere. Southern observers should see star trails circle the south celestial pole rather than the northern one.Last Verified
2026-03-23
Assumptions
- The protocol holds location, height, and distance inputs fixed while comparing observation to prediction.
- A single ambiguous photo is not enough; repeatable measurements matter.
- Primary-source references carry more weight than generic summaries.
External Sources
A page-specific source set has not been attached yet.
What Would Falsify This Page
A repeatable observation that matched the competing model better than this experiment’s stated prediction would count against this page.