This is how Earth’s poles wobble over time

Earth’s spin doesn’t always line up perfectly with its north and south poles. Instead, the geographic poles often twirl like a top around Earth’s rotational axis when viewed from space. Every 6.4 years, the axes line up and the wobble fades for a short time – until the geographic poles move away from the spin axis and begin to spiral once again. This movement is called polar motion. This animation shows how the geographic north and south poles (shown in blue) move with respect to Earth’s spin axis (shown