Nature, Published online: 23 September 2026; doi:10.1038/d41586-026-02773-1
Variations in day length that occur on multidecadal timescales are caused by gravitational coupling between Earth’s inner core and its solid mantle.Gravitational forces inside Earth drag some decades out — and make others fly by
Nature, Published online: 23 September 2026; doi:10.1038/d41586-026-02773-1Variations in day length that occur on multidecadal timescales are caused by gravitational coupling between Earth’s inner core and its solid mantle.