Please join us in remembering Margaret Hamilton (1936–2026), whose pioneering work at NASA and MIT reshaped both spaceflight and software history. As lead software developer for the Apollo program, her priority scheduling code safely guided Apollo 11 to the lunar surface. An ACM Distinguished Member and Presidential Medal of Freedom recipient, her legacy in building ultra-reliable software lives on across the entire computing community. https://cacm.acm.org/news/in-memoriam-margaret-hamilton-1936-2026/