The brightest star in the constellation Eridanus, located in the southern sky and the ninth brightest star visible from Earth.
From Arabic 'Ākhir al-Nahr' meaning 'the end of the river', referring to Eridanus which was imagined as a celestial river in classical astronomy.
Achernar's name preserves ancient Arabic astronomy—the medieval Arab astronomers catalogued Southern Hemisphere stars that Greeks couldn't see, and we still use their poetic names today.
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