Bet

Its story

Beta Serpentis shines in the head of the Serpent with the clean white light of an A-type star, still young in cosmic terms. It marks one of the corners of the small triangle that forms the reptile's head, just before its body is split in two by the figure of Ophiuchus. At 155 light years away, its glow set out for us when the first precise maps of the southern sky were still being drawn.