In a look ahead at a week of Cambridge and Somerville events, there’s a free pi day pie potluck, comedy against cancer, Mobius performance art called “Slay,” Ukrainian folk-rock, a St. Patrick’s fun ...

Cannon officially retired in 1940, although her passion for the stars was such that she continued working almost until she died at the age of 77 in 1941. The American Association for the Advancement ...