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• 지구는 반복되온 빙하기로 다시 들어가는가? Three separate orbital rhythms layer on top of each other: the shape of Earth's orbit shifts over roughly 100,000 years, the tilt of its axis swings between 22 and 24.5 degrees over about 41,000 years, and the wobble blog.naver.com · 2026.06.14