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First Point of Aries

更新日期:2026-08-14

词语 First Point of Aries
释义

First Point of Aries Astronomy the point on the celestial sphere where the path of the sun crosses the celestial equator from south to north in March, marking the zero point of right ascension. Owing to precession of the equinoxes it has moved from Aries into Pisces, and is now approaching Aquarius. 【天文】春分。亦称VERNAL EQUINOX.

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