On This Day

What Happened on May 9, 1922

Day of the Week: Tuesday

Historical Events

Event of interestEvent of Interest

The International Astronomical Union formally adopt Annie Jump Cannon's stellar classification system, which with only minor changes, is still used today

Astronomer Annie Jump Cannon
Annie Jump Cannon

Famous Birthdays

  • Sheila Burrell, British actress (Black Orchid, Paranoiac, Laughter in Dark), born in Blackheath, London (d. 2011)