Margaret Burbidge, an astronomer who made a significant contribution to the nature of stars, helped simplify the idea that humans are composed of stardust, and who helped women find a home in science, has died at 100.Burbidge died resting at her home in San Francisco, on April 5, from complications after a fall. Margaret’s death comes just six months after the University of California, San Diego celebrated Burbidge’s many achievements, which also involved becoming the first woman to work as director of London’s Royal Greenwich Observatory. Margaret was a giant of a bygone era when astronomers sat at the eyepieces of telescopes and used those leviathans to unlock the darkest mysteries of the universe.