The Earth's axis ofrotation is tilted in relation to the ecliptic plane, an imaginary surface through Earth's orbit around the sun.
地球的自转轴与黄道面呈一定角度。黄道面是地球公转轨道所在的一个假想平面。
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Uranus isn't eccentric; its path is almost a perfect circle. Strangely though, Uranus' axis ofrotation is almost parallel to the ecliptic plane. Uranus has 27 moons.