Daniel Kirkwood on June 1878
F. A. Lindemann on September 1915
Johann Koenigsberger on May 1907
George F. Becker on April 1910
Frank Wigglesworth Clarke on May 1913
J. Joly on January 1915
H. S. Shelton on January 1915
H. N. Hutchinson on October 1892
Robert John Strutt on September 1908
John Joly on November 1908
John Joly on April 1909
E. Rutherford on May 1909
G. W. Bulman on January 1913
Arthur Holmes on August 1913
Henry Norris Russell on June 1921
Alfred C. Lane on February 1930
P. M. Hurley on August 1949
Derek York on January 1993
Archibald Geikie on September 1892
Warren Upham on April 1893
W. J. Sollas on October 1900
Florian Cajori on September 1908
Harlow Shapley on January 1919
William Harvey McNairn on April 1919
H. V. Hilker on April 1923
Lawrence Badash on August 1989
Cosmic Inflation and..
Secrets of the Unive..
New Light on the Sol..
The Early Years
Staying informed has never been more important.