Barnard’s star

Jacobus Cornelius Kapteyn and the Rotation of the Milky Way

Jacobus Cornelius Kapteyn and the Rotation of the Milky Way

On June 18, 1922, Dutch astronomer Jacobus Cornelius Kapteyn passed away. Kapteyn carried out extensive studies of the Milky Way and was the discoverer of evidence for galactic rotation. He used photography and statistical methods in determining the motions and spatial distribution of stars, the first major step after the works of William and John Herschel. Jacobus Cornelius Kapteyn was born on 19 January 1851 in Barneveld,in the Dutch province of Gelderland,…
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Edward Barnard and His Love for Celestial Photography

Edward Barnard and His Love for Celestial Photography

On December 16, 1856, American astronomer Edward Emerson Barnard was born. Barnard is best known for his discovery of the high proper motion of Barnard’s Star in 1916, which is named in his honor. He also pioneered in celestial photography, specializing in wide-field photography. Early Life Edward Barnard was born in Nashville, Tennessee, the son of Reuben Barnard and Elizabeth Jane née Haywood. His father died before his birth, and the son grew…
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