Alexander
William Roberts, Scottish-born South-African astronomer (Farr, Sutherland 04
December 1857 – Alice, Eastern Cape 27 January 1938) Authored
over 100 works Discovered
some variable stars With H.N.
Russell demonstrated that the components of some of binary star systems are
low-density stars with gigantic diameters Developed a
visual photometer HONORS Lunar
crater Roberts LINKS
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