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What topic do you LOVE to talk about, but rarely get to? (lemmy.world)

submitted 1 year ago by [email protected] to c/[email protected]

231 comments fedilink hide all child comments

Everyone has something they can't stop themselves from nerding out over - but often it's hard to find people to talk to about it. So go ahead, share your interests, and tell us about them!

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[–] [email protected] 1 points 1 year ago (1 children)

what is the speed of gravity

has anyone tried to measure that?

[–] [email protected] 2 points 1 year ago (1 children)

There are some links describing the projects working on this at : https://en.wikipedia.org/wiki/Speed_of_gravity

[–] [email protected] 1 points 1 year ago* (last edited 1 year ago)

Thanks

In the relativistic sense, the "speed of gravity" refers to the speed of a gravitational wave, which, as predicted by general relativity and confirmed by observation of the GW170817 neutron star merger, is the same speed as the speed of light (c).