Margaret Hamilton, a pivotal figure in computer science and a key contributor to NASA's Apollo program, has died at the age of 90. Hamilton developed crucial software for the Apollo Guidance Computer, essential for navigating the spacecraft to the moon. Her work was instrumental in averting a potential disaster during Apollo 11's landing by autonomously prioritizing essential tasks when the computer was overloaded. Recognized for her innovative approach to software engineering, Hamilton coined the term "error correction" for her work, now standard practice in the field. She received the Presidential Medal of Freedom in 2016 for her contributions to the United States' space program and technological advancements. Hamilton’s legacy extends beyond the Apollo missions, influencing modern software development principles. Her groundbreaking achievements in computer science made her a role model for generations of programmers in the United States.