Margaret Hamilton, the software developer crucial to the success of the 1969 Apollo 11 moon landing, has died at the age of 90. Her groundbreaking work in software development enabled the United States to achieve the historic feat of landing humans on the Moon, effectively winning the Space Race of the 1960s. Hamilton began her career at the Massachusetts Institute of Technology (MIT) in 1959, initially working on weather prediction software, and later led a team of 100 engineers designing the software for NASA’s Apollo missions. She is credited with coining the term “software engineering” and is considered one of its founders. In 2016, President Barack Obama awarded Hamilton the Presidential Medal of Freedom for her contributions to science and space exploration. Her passing was announced by MIT, where she worked for many years, leaving a lasting legacy in the field of computer science.