• kase@lemmy.worldEnglish
    2·
    11 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.worldEnglish
      5·
      11 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.