Birdwatch Note Rating
2023-01-27 06:11:21 UTC - SOMEWHAT_HELPFUL
Rated by Participant: 50C81A2F8DADCFF518069E3D648019773C08B7DBF71E531C01241544AD95D75C
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Original Note:
The inner core rotates in the same direction as the rest of Earth, but cycles between going slightly faster or slower (<1° difference/yr) every ~35 years. This natural cycle is only known through precise geophysical study; it does not cause noticeable changes at the surface. https://www.nature.com/articles/s41561-022-01112-z https://www.washingtonpost.com/science/2023/01/23/earth-core-slowing/
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