New Discoveries Challenge Theories on Planet Rotation
新發現挑戰行星自轉理論
更新於: 2026年6月14日 下午12:00
Recent scientific discoveries are fundamentally changing how we understand planetary rotation.
近期的科學發現從根本上改變了我們對行星自轉的理解。
For a long time, astronomers believed a planet’s spin was determined primarily by its mass.
長久以來，天文學家一直認為行星的自轉主要取決於其質量。
However, new observations from the W.
然而，來自凱克天文台的新觀測揭示了一種「質量-自轉悖論」，即一些較小的氣態巨行星比較大的褐矮星轉得更快。
Keck Observatory reveal a 'mass-spin paradox,' where some smaller gas giants rotate faster than larger brown dwarfs.
與此同時，在地球上，人類活動正在改變我們自己的自轉。
Researchers now believe that early environmental factors, particularly magnetic fields, act as a 'fossil record' of a planet's formation, shaping its spin far more than previously assumed.
氣候變遷導致極地冰層融化，這將質量重新分配至赤道附近。
Meanwhile, here on Earth, human activity is altering our own rotation.
就像花式溜冰選手伸展手臂以減慢旋轉一樣，質量的轉移導致地球自轉減速。
Climate change is causing polar ice to melt, which redistributes mass toward the equator.
儘管這種變化僅發生在毫秒之間極小的分數，但其影響已足以衝擊全球時間保持和衛星導航。
Much like a figure skater extending their arms to slow down a spin, this shift in mass is causing Earth’s rotation to decelerate.
總之，這些發現表明，行星自轉並非一個單純、固定的過程。
Whether driven by cosmic magnetic fields or melting ice caps, rotation is a dynamic, sensitive balance influenced by complex external forces.
