Margaret Hamilton, a profoundly influential computer scientist best known for leading the software engineering team at MIT’s Instrumentation Lab during NASA’s Apollo program, died on Sep. 30. She was 90.
A computing pioneer who authored over 130 publications, Hamilton helped to establish software engineering as a dedicated discipline. She worked at MIT from 1959 until the mid-1970s, after which she became a successful computing entrepreneur and CEO.
Trip Gabriel’s obituary in The New York Times credits Hamilton as the person “who led the 100-person team that wrote the onboard software for the Apollo missions, guiding Neil Armstrong and Buzz Aldrin to a safe landing on the moon.”
Hamilton insisted on calling the still-nascent field “software engineering” to describe the exacting development process she and her team were pioneering to ensure the safety of those astronauts.
Later in life, Hamilton became an icon for women in science and technology, especially after a now-famous photo, showing her next to a printout of her MIT team’s Apollo code, began circulating online.
The New York Times tops its obituary with the 1969 photo of “the 5-foot-4 Ms. Hamilton standing beside a head-high stack of printed code developed for the moon landing.”
Just a few days ago, someone posted that photo on Mastodon. I saw only the bottom few pixels as I scrolled, but immediately recognized it. It’s that iconic.

