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Arcturus    音标拼音: [,ɑrkt'ʊrəs] [,ɑrkt'ɚəs]
n. 大角星

大角星

Arcturus
n 1: the 4th brightest star and the brightest star in the
constellation Bootes; 36 light-years from Earth

Arcturus \Arc*tu"rus\, n. [L. Arcturus, Gr. ? bearward, equiv.
to ?; ? bear ? ward, guard. See {Arctic}.] (Anat.)
A fixed star of the first magnitude in the constellation
Bo["o]tes.
[1913 Webster]

Note: Arcturus has sometimes been incorrectly used as the
name of the constellation, or even of Ursa Major.
[1913 Webster]

Canst thou guide Arcturus with his sons [Rev.
Ver.: "the Bear with her train"]. --Job xxxviii.
32.
[1913 Webster]

Arcturus
bear-keeper, the name given by the ancients to the brightest
star in the constellation Bootes. In the Authorized Version (Job
9:9; 38:32) it is the rendering of the Hebrew word _'ash_, which
probably designates the constellation the Great Bear. This word
('ash) is supposed to be derived from an Arabic word meaning
night-watcher, because the Great Bear always revolves about the
pole, and to our nothern hemisphere never sets.


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  • Arcturus - Wikipedia
    Arcturus forms one corner of the Spring Triangle asterism Located relatively close at 36 7 light-years from the Sun, Arcturus is a red giant of spectral type K1 5III—an aging star around 7 1 billion years old that has used up its core hydrogen and evolved off the main sequence
  • Arcturus, brightest star of the northern sky - EarthSky
    Bottom line: Arcturus is the brightest star in the northern half of the sky It’s easy to find in spring in the Northern Hemisphere near the handle of the Big Dipper
  • Arcturus: Facts About the Bright Red Giant Star | Space
    Arcturus is a red giant star in the Northern Hemisphere of Earth 's sky and the brightest star in the constellation Boötes (the herdsman) Arcturus is also among the brightest stars that can be
  • 7 Facts About Arcturus, the Red Giant Star - HowStuffWorks
    If you're curious to learn about Arcturus, one of the brightest stars in the night sky, read on for interesting facts on how it can be spotted with the naked eye, fascinating discoveries, and more interesting facts about Arcturus star
  • Arcturus | Brightest Star, Red Giant, Constellation Bootes - Britannica
    Arcturus, the fourth brightest star in the night sky, and the brightest star in the northern constellation Boötes, with an apparent visual magnitude of −0 05 It is an orange-coloured giant star 36 7 light-years from Earth
  • Arcturus Star | Pictures, Location, and the Origin of its Name
    Arcturus, also known as Alpha Boötis, is one of the brightest stars in the northern hemisphere In fact, it is the third brightest individual star in the entire night sky behind Sirius and Canopus
  • Arcturus (α Boo): Star Type, Size, Name, Constellation | Star Facts
    Arcturus, Alpha Boötis (α Boo), is a red giant star located 36 7 light-years away in the northern constellation Boötes With an apparent magnitude of -0 05, it is the brightest star in Boötes and the 4th brightest star in the sky
  • Arcturus – Constellation Guide
    Arcturus, Alpha Boötis, is the brightest star in Boötes constellation and the fourth brightest star in the sky With an apparent magnitude of -0 04, Arcturus is the brightest star in the northern celestial hemisphere
  • Arcturus: The Mysteries of the Red Giant Star
    Arcturus is the brightest star in the northern sky, easily visible without a star chart This brilliant orange-red star, found in the constellation Boötes (boh- OH -teez) the Herdsman, is around 36 7 light-years from Earth Arcturus’ distinctive reddish hue reflects its temperature
  • Arcturus Position Viewing Details – Where is Arcturus in the Sky Tonight
    Arcturus is the brightest star in the constellation Boötes and the fourth-brightest star in the night sky It is a red giant star approximately 36 7 light-years away from Earth





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