births
Frank Schlesinger, American astronomer and author (died 1943)

Related Wikipedia articles
Frank Schlesinger
American astronomer
Frank Schlesinger was an American astronomer. His work concentrated on using photographic plates rather than direct visual studies for astronomical research.Source: Wikipedia (CC BY-SA)
May 11
Day of the year
May 11 is the 131st day of the year in the Gregorian calendar; 234 days remain until the end of the year.Source: Wikipedia (CC BY-SA)