Lucy flies by its final target, the binary asteroid Patroclus/Menoetius. When it completes this flyby, Lucy will have visited an unprecedented seven asteroids.
Beyond the asteroid belt are "fossils of planet formation" known as the Trojan asteroids. These primitive bodies share Jupiter's orbit, and may hold clues to the formation and evolution of our solar system. NASA is preparing to explore the Trojan asteroids for the first time with a mission called Lucy, which will launch in 2021 and visit seven asteroids over twelve years. Like the famous hominid fossil for which it is named, the Lucy mission will improve our understanding of the ancient past, and be the first to uncover these fossils of planet formation.