Quote of the day
The dependence of one people upon another, even for the benefits of legislation, is the deepest source of national weakness.
Vera Rubin

Born: July 23, 1928
Died: December 25, 2016 (aged 88)
Bio: Vera Rubin was an American astronomer who pioneered work on galaxy rotation rates. She uncovered the discrepancy between the predicted angular motion of galaxies and the observed motion, by studying galactic rotation curves.