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[-] Kase@lemmy.world 2 points 10 months ago

So in a certain sense, a 'day' on Mercury is 2.034090909090 'years' long? (Solar day divided by orbiting the sun, lol)

[-] brianorca@lemmy.world 5 points 10 months ago* (last edited 10 months ago)

No. I rounded off the numbers. A Mercury day is exactly 2 Mercury years. Which is why it's "in resonance". That means that gravity will speed up or slow down the rotation to keep the ratio stable over time.

[-] Kase@lemmy.world 2 points 10 months ago

Oh that's really neat!

this post was submitted on 21 Dec 2023
655 points (98.4% liked)

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