Karl G. Jansky
Sir James H. Jeans
Jacobus Cornelius Kaptein
James E. Keeler

FIG. l-25

FIG. l-26

FIG. l-27

FIG l-28
by: The Astronomical society of the Pacific
by: The Atronomical society of the Pacific
by: The Astronomical society of the Pacific
by: The Astronomical society of the Pacific
Johannes Kepler
Gerard P. Kuiper
Samuel P. Langley
Pierre Simon, Marq. de Lalpace

FIG. l-29

FIG. l-30

FIG. l-31

FIG. l-32
by: The Astronomical society of the Pacific
by: The Astronomical society of the Pacific
by: The Astronomical society of the Pacific
by: The Astronomical society of the Pacific
Henrietta Leavitt
Urbain Jean Joseph Leverrier
J. Norman Lockyer
Percival Lowell

FIG. l-33

FIG. l-34

FIG. l-35

FIG. l-36
by: The Astronomical society of the Pacific
by: The Astronomical society of the Pacific
by: The Astronomical society of the Pacific
by: The Astronomical society of the Pacific
Albert A. Michelson
Edward A. Milne
Rudolph Minkowski
Maria Mitchell

FIG. l-37

FIG. l-38

FIG. l-39

FIG. l-40
by: The Astronomical society of the Pacific
by: The Astronomical society of the Pacific
by: The Astronomical society of the Pacific
by: The Astronomical society of the Pacific
Simon Newcomb
Isaac Newton
William Parsons, Lord Rosse
Cecilia Payne-Gaposchkin

FIG. l-41

FIG. l-42

FIG. l-43

FIG. l-44
by: The Astronomical society of the Pacific
by: The Astronomical society of the Pacific
by: The Astronomical society of the Pacific
by: The Astronomical society of the Pacific
Edward G. Pickering
Henry Norris Russell
Harlow Shapley
Vesto M. Slipher

FIG. l-45

FIG. l-46

FIG. l-47

FIG. l-48
by: The Astronomical society of the Pacific
by: The Astronomical society of the Pacific
by: The Astronomical society of the Pacific
by: The Astronomical society of the Pacific