Quotes Donut - Annie Jump Cannon (left) and Henrietta Leavitt, whose unsung labours and incisive deductions made Hubble’s breakthroughs possible.

Annie Jump Cannon (left) and Henrietta Leavitt, whose unsung labours and incisiv... - Bill Bryson - Quotes Donut

Written By Bill Bryson

Annie Jump Cannon (left) and Henrietta Leavitt, whose unsung labours and incisive deductions made Hubble’s breakthroughs possible.

7 Reads • June 18, 2020