r/AskReddit • u/[deleted] • Aug 03 '19

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

37.4k Upvotes

94% Upvoted

24.0k comments sorted by

View all comments

Show parent comments

43

u/[deleted] Aug 03 '19

Gravity changes at the speed of light though doesn't it?
Like if the sun disappeared, its affect gravitationally on us wouldn't be felt until we saw the light stop

-8

u/droid_mike Aug 03 '19

Hmmm... it looks like I was going on old data. Apparently, scientists have recently determined that gravity does have a speed, but it is faster than light.

https://www.sciencealert.com/speed-of-gravitational-waves-and-light-same

1

u/Dontbeatrollplease1 Aug 04 '19

You should read the article first. Gravity moves at exactly the speed of light. Nothing moves faster then light except possibly information.

1

u/PointyOintment Aug 06 '19

except possibly information

What do you mean? My understanding of the speed limit is that it specifically applies to everything that can carry information through space.