First Attempt at a Theory of the Arrangement and Motion of the Sidereal System. The Astrophysical Journal LV, [55], 1922, pp. 302–327 [FIRST USE OF THE TERM DARK MATTER]
Chicago: University of Chicago, 1922. 1st Edition. FIRST EDITION OF THE 1st APPEARANCE IN PRINT OF THE TERM “DARK MATTER” & FIRST SUGGESTION OF ITS EXISTENCE. This paper, First Attempt at a Theory of the Arrangement and Motion of the Sidereal System, represents a culmination of Kapteyn’s life work and..... More