Fait mathématique: 20173 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Culture générale: 20173 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: March 25th is the day in 1979 that the first fully functional space shuttle orbiter, Columbia, is delivered to the John F. Kennedy Space Center to be prepared for its first launch.