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Alvan Graham Clark’s discovery of Sirius B

Alvan Graham Clark’s discovery of Sirius B

Alvan Graham Clark’s discovery of Sirius B


Originally shared by Hennie Kriel

January 31, 1862:

US astronomer Alvan Graham Clark discovers the white dwarf star Sirius B, a companion of Sirius, through an 18.5-inch (47 cm) telescope (now located at Northwestern University).

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