Always a bit of the heebie-jeebies thinking about stuff like that!
And the light would go in a circle because... (thinking) the universe is shaped like a big funnel? I'm trying to remember the diagrams in Steven Hawkings book!) This is too much for my pea-brain! BUT at distances like those in our own galaxy, the circularity of light must not be measurable. Otherwise a lot of our calculations about the stars would really be messed up. Right?
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