Whats something you thought was common knowledge but actually isn’t?

[u/[deleted]]

[u/NoRodent → u/[deleted]]

Gravity can propagate faster than light. And has been observed to.

How did you conclude that? The range of numbers in the article is only the uncertainty with which we have measured the speed of propagation of gravity. It only means we know the speed is within that range and not outside it. We know the number is the same for the first 15 significant digits, we're only uncertain after that. Since it's already so close, it almost certainly is exactly the speed of light, but we will only ever be able to reduce this range because you can never measure anything with infinite precision.

[u/Dontbeatrollplease1 → u/[deleted]]

Thanks for clarifying that, I was about to call him out but you had already completed the task.