Debunking the flat Earth model.
(media.scored.co)
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In the video you linked, at 2:45, he says the stars “sweep over a great southern arc,” and that is why people in the Southern Hemisphere can all see the same stars, but not at the same time.
https://www.youtube.com/watch?v=ADNeFSuKnqM
If that was true, there should be lateral movement throughout the night when time-lapsing the southern celestial pole (SNP). It would have to slowly drift through the field of vision as it makes its way around its “great southern arc.” That movement would get picked up in time-lapse photography. So we should see movement in the time-lapses. But we don’t. All night long, the position of the Southern Celestial Pole is fixed.
The Southern Celestial Pole does not drift in any time-lapse. It is always stationary in the sky with all southern stars rotating around it. Just like the North Celestial Pole.
Further, if the SCP was the simple result of perspective, and not a tangible spot in space, then the center point of the spiral should vary (even if just slightly) as our perspective changes. But the center point is always the say, regardless of where it is viewed from, just like the North Pole (NCP).
The video you sent, specifically says the southern stars will travel along a “great southern arc” allowing people from any part south of the Equator to see the same stars… as they move toward them, them move away from them.
But the Southern Celestial Pole (SCP), is unmoving. It is stationary. It is just as stationary as the North Celestial Pole (North Star).
Your videos and sources do not support your current statements. Nor do they explain how the SCP is stationary all night long, but can be viewed from anywhere south of the Equator.