Death of Henrietta Swan Leavitt

Henrietta Swan Leavitt died on December 12, 1921, at approximately 10:30 p.m. in Cambridge, Massachusetts, succumbing to complications from stomach cancer, an illness that had troubled her for several years while she continued her demanding observational work at the Harvard College Observatory. She was only 53 years old.

Leavitt's death came just months after her formal appointment as Head of Stellar Photometry, a role that recognized her decades of contribution but which she was unable to fully occupy due to her declining health. Throughout her career, she had suffered from progressive hearing loss as well, compounding the physical challenges she faced while conducting her painstaking visual and photographic work.

Her death was a profound loss to the field of astronomy, though full recognition of her scientific contributions would take decades to fully materialize in the historical record, given the era's tendency to attribute the discoveries of women "computers" primarily to the male directors under whose names their circulars were published. Notably, Swedish mathematician Gösta Mittag-Leffler considered nominating Leavitt for the Nobel Prize in Physics in 1925, unaware that she had already died four years earlier—Nobel Prizes cannot be awarded posthumously, and so this recognition never came to fruition. Her death nonetheless marked the end of one of the most quietly consequential careers in the history of observational astronomy.