Lucy is one of the most famous early human ancestors, a specimen of the species Australopithecus afarensis. Discovered in 1974 in Ethiopia, her skeletal remains date back about 3.2 million years, providing crucial insights into human evolution and bipedalism. Lucy's discovery revolutionized our understanding of early hominins. Standing about 3.5 feet tall, she exhibited both ape-like and human-like features, highlighting the complex journey of human ancestry. Her name, inspired by the Beatles song 'Lucy in the Sky with Diamonds,' has become synonymous with the study of human origins.