celestial equator
plural of Anglosaxon
(astronomy) A great circle on the celestial sphere, coincident with the plane of earth's equator.
present participle of mold
plural of caraguata
天の赤道は、地球の赤道面と一致する天球上の大円で、天文学者が星の位置を描く際の基準線を空に示します。
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