I think the reason some people might believe this claim is because we're taught in school that the moon's gravity causes the tides. I think the reasoning goes, "well if the moon's gravity can affect the tides, surely it can affect smaller things too"

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[–] 17 points 3 years ago (1 child)

I'm not so sure. Gravity only travels at the speed of light so mass outside of the observable universe hasn't been able to affect us yet.

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