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Is that not also the reason why start appear to twinkle in the night sky? (Stellar scintillation for BM) Or is that more to do with a thick atmosphere? I can't remember if it's both or one of the two.
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That's all atmospheric refraction. If it were lensing, there would have to be galaxies jumping back and forth by thousands of lightyears every twinkle. That's quite a bit faster than the universal speed limit.
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so light is completely unaffected by time dialation? so if time was at a complete stop the light would still be able to move through it? and how do they tell the difference between two objects or one object that has been duplicated with bent light?
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They can tell the difference because they look the same. Stars and galaxies are all different.
If time was at a stop, light would also be at a stop, there being only one moment to exist in means there is no movement. That is not the same as time dilation.
It's complicated.