The brightest star in the constellation Boötes, the fourth brightest star in the night sky, with an orange-red color.
From Greek 'arktos' (bear) + 'ouros' (guard/keeper). The name means 'bear-keeper' or 'guardian of the bear,' referring to Ursa Major.
Arcturus got its name because ancient astronomers saw it as the 'guardian of the bear' constellation—and it's so bright that it's been used for navigation for thousands of years!
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