Birdwatch Note Rating
2023-01-24 09:05:03 UTC - HELPFUL
Rated by Participant: 7BF678B8E3DE3697B627C878B38EE05AD56C96706817A9F40445B8937C56EAF9
Participant Details
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.washingtonpost.com/science/2023/01/23/earth-core-slowing/ https://www.nature.com/articles/s41561-022-01112-z
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