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
Lunar crater Roberts
Angel M. Andreetta, Italian-born Ecuadorian Salesian missionarian and orchidologist (Castions di…
José Francisco da Silva Lima, Portuguese-born Brazilian physician (Vilarinho, Portugal…
Alfonso Díaz Najera, Mexican medical entomologist (Balsas, Guerrero State 19…
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