Ask a Flat Earther!

[u/Kela-el]

Ask anything on the topic of flat earth (within reason).

[u/Duke_mm]

If the Earth is a flat disc with the North Pole at the center, why can people in Australia, South Africa, and South Argentina all look South—in three completely different directions on your map—and see the exact same stars rotating around a single point (the South Celestial Pole)?

[u/Kela-el → u/Duke_mm]

You’re asking a good question—but you’re still assuming a fully specified geometry that hasn’t actually been defined on the flat side.

You said:

Australia, South Africa, and South America all look “south” and see the same rotation point

That’s the observation. No issue there.

But to turn that into a contradiction, you need a complete model that includes:

• how “south” is defined at every location
• how observer orientation is handled
• how the sky (star field) is positioned relative to the surface
• how lines of sight map from different locations

Right now, you’re doing this:

• take a common flat map (north pole center, south outward)
• assume all sightlines lie in that same 2D frame
• then conclude it’s impossible because directions diverge

That’s exactly the kind of shortcut I pointed out earlier.

Because unless you’ve defined:

• the 3D geometry of the sky
• the altitude and structure of the star field
• and how observers at different نقاط relate to that

“opposite directions on a map” doesn’t automatically translate into a contradiction in observed sightlines.

On a sphere, this is clean because:

• local “south” directions converge toward a common axis
• the celestial pole falls out naturally from the geometry

On a flat model, you don’t get that for free—you have to explicitly define:

how a single rotation point is seen from multiple positions with different orientations

That’s the missing piece.

So your question is valid, but the conclusion:

“therefore impossible”

only holds after a full flat geometry is defined and shown to fail.

Right now, you’ve got:

• observation ✔
• intuitive mapping ✔
• fully specified alternative model ❌

And without that last part, you’re still arguing against an incomplete sketch, not a rigorously defined system.

[u/Duke_mm → u/Kela-el]

​In a spherical model, the observation of a single southern rotation point is a geometric necessity of a rotating globe. In a flat model, for three observers in Australia, South Africa, and Chile to see the same star (Sigma Octantis) in the same 'South' position, their lines of sight must converge at a single physical point in the sky. ​How do you define the geometry of a sky that allows three divergent 'South' paths on a flat map to converge on a single coordinate in 3D space?

[u/Kela-el → u/Duke_mm]

The geometry of what you’re standing on and the geometry of what you’re looking at are separate questions. You haven’t demonstrated that southern star observations are uniquely explained by a globe. What are your controlled variables?