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Old October 20th 18, 09:31 AM posted to sci.astro.amateur
Gerald Kelleher
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Default Review of video commentary

https://www.youtube.com/watch?v=01QWC-rZcfE

It is quite a sight these days to see these guys try their hand at proof of the Earth's orbital motion by appealing to the changes in positions of the stars but unfortunately reference the changes from horizon to horizon instead of their transition from evening to morning appearance or more accurately, the line-of-sight perspective where they transition from left to right of the Sun. Of course they lean on old familiar ways using not only the Sun's apparent motion through the Zodiac but also frame it in RA/Dec terms where the Sun also 'wanders' with the planets.

No need to go any further and the usual attempt to explain seasonal variations in terms of 'tilt'. The planet has two distinct day/night cycles from two distinct rotational causes but the less competent bypass the Sun as a reference and appeal to a celestial sphere to draw their conclusions.

I don't mind that these guys now use proof of the Earth's orbital motion using the Sun and background stars but they are still stuck in celestial sphere mode which undoes the productive perspective and still shows they are only learning something available here for quite some time.