A modification i did on the timelapse of HubbleESA :
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To show (what i think) is a better representation of the light eco effect, based on this other video:
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Where is shown that the motion of the light waves is way faster than the motion of the gas itself around the star.
I didn't the exact speed calculation, but i tried to show the concept.
I was inspired by this video from Sixty Symbols:
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