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R Doradus

Betelgeuse

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betelgeuse star,alpha orionis

Betelgeuse, Alpha Orionis (α Ori), is a red supergiant star located in the constellation Orion, the Hunter.  It has an estimated radius about 764 times… Read More »Betelgeuse

Alphard

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alphard star,alpha hydrae

Alphard, Alpha Hydrae (α Hya) is an orange giant or bright giant star located in the constellation Hydra. With an apparent magnitude of 2.00, it… Read More »Alphard

Antares

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antares star,alpha scorpii

Antares, Alpha Scorpii (α Sco) is a red supergiant star located in the constellation Scorpius. With an average apparent magnitude of 0.96, it is the… Read More »Antares

Arcturus

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Arcturus star,Alpha Boötis

Arcturus, Alpha Boötis (α Boo), is a giant star of the spectral type K0 III located in the northern constellation Boötes. It is the brightest… Read More »Arcturus