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Alfred Bicknell on April 1895
Albert D. Watson on December 1917
G. H. Darwin on November 1905
G. Millochau on October 1909
T. J. J. See on October 1910
F. W. Henkel on April 1911
Harold Jeffreys on September 1917
Emile Guarini on November 1903
C. A. Young on June 1877
Felix Linke on November 1908
Henry Norris Russell on November 1928
Camille Flammarion on October 1879
Camille Flammarion on September 1879
Felix Erber on September 1906
F. W. Henkel on May 1909
Henry Norris Russell on July 1930
Steven Soter on January 2007
James F. Kasting on September 2003
Edward Bell on April 2010
The Once and Future ..
New Light on the Sol..
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