"极星"是个多义词，它可以指极星（户外服饰品牌）,极星（北极星）,极星（腾讯作者）,Polestar。
北极星 [天] polestar ; [天] Polaris ; the North star ; lodestar ; polaris
拱极星 [天] circumpolar star
拱极星座 circumpolar constellation
北极星序 north polar sequence
南极星 NJSTAR Japanese Word Processor ; NJStar Chinese Word Processor ; NJStar ; NJWIN
南极星万年历 NJStar Chinese Calendar ; NJStar Calendar
北极星愿 Polaris ; Pine Tree & Polaris
北极星光 PORAY ; POSTAR
峰顶正上方是明亮的北极星，这次曝光正好逮住了一颗极轨铱星的闪光。
Bright north star Polaris stands above the peak in an exposure that also captures the brilliant trail of a polar orbiting Iridium satellite.
他们关注的不是星辰偕日升降，也不是地平线附近的星辰，而是永不落下的北极星和拱极星。
They concentrated attention, not on heliacal risings and Settings, not on the horizon, but on the pole star and on the circumpolar stars which never rise and never set.
极环星系是种稀有的星系类型，它们有着几乎和银盘平面垂直，呈环形公转的大量的恒星、气体和星尘。
A rare galaxy type, polar ring galaxies have a substantial population of stars, gas, and dust orbiting in rings nearly perpendicular to the plane of the galactic disk.
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