DanYHKim t1_j5p12yu wrote
Does that mean we will be seeing a return of hippies?
>The core’s slowing down isn’t the beginning of the end times. The same thing appears to have happened in the late 1960s and early 1970s, and the study authors at Peking University in China suggest it may represent a 70-year cycle of the core’s spin speeding up and slowing down.
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