Here is geometry, applied that you can do yourself.

the video is fundamentally wrong because it assumes the the prism is the source of the light.

#fail

the earth's atmosphere acts as a prism.

as light from the sun enters the atmosphere, it bounces onto earth from the atmosphere (prism).

the atmosphere is not the source of the light - just the source of the refraction.

right? :)

so sure... triangulate to the source of the refraction... you'll get some distance right around where the atmosphere hangs out :)

I don't like to get into speculations too much.

waahahahaha lo... good one :)