In brief
The world loses its mother of software engineering as Margaret Hamilton – the lead developer behind NASA’s Apollo 11 flight software – dies at 90. Her work defined the term ‘software engineering’ and ensured safe lunar landings. Recognised by the Presidential Medal of Freedom, she mentored generations of women in STEM. Her legacy continues through her software companies and her role in guiding humanity to the Moon.
In a quiet farewell to a pioneer, Margaret Hamilton – the computer scientist who wrote NASA’s Apollo 11 flight software – has died at 90.
Hamilton, a trailblazer who founded her own software company in the 1970s, was integral to the software that guided Neil Armstrong and Buzz Aldrin to the lunar surface. With MIT’s Software Engineering Division, she built a priority‑driven system that kept the “lifeline” code running when a computer overload alarm rose just moments before the Moon landing.
The breakthrough she introduced – realising that the software could self‑prioritise tasks – set the standard for embedded systems worldwide. The program that once sounded its alarm in 1969 is now part of the definition of software engineering.
In 2016 President Barack Obama presented her with the Presidential Medal of Freedom, lauding her as “an unsung hero” of humanoid space exploration. She enjoyed a career that spanned academic, governmental and private sectors, mentoring a generation of women who would follow her footsteps in technology.
Hamilton’s 1936 birth in Indiana and 1955 studies at the University of Michigan and Earlham College produced a mind that bridged mathematics and computer science. When she moved to Boston with her husband, the MIT assignment grew into a lifetime of innovation until her passing on 30 September 2026.
Her family – a daughter, a son‑in‑law, two grandsons and four great‑grandchildren – remember her as a generous, determined engineer and a mentor. The world pens her obituary while her legacy continues to inspire the way we compute–and how we explore the cosmos.
