"A life spent in the routine of science need not destroy the attractive human element of a woman's nature."
So said astronomer Annie Jump Cannon, nicknamed the "Census Taker of the Sky," who was known for her work classifying the stars.
Originally, stars were classified based on a brightness rating, with one being very bright and 5 being very dim. 01:01
Temperature is one of the most important properties to consider when classifying. 04:13
The Earth's sun ranges right in the middle of temperature, mass and brightness when compared to other stars we know of. 06:07