Lucy Trajectory (IMAGE) Southwest Research Institute Caption This illustration shows the trajectory of NASA's Lucy mission, which is led by Southwest Research Institute. The Lucy spacecraft will launch in 2021 and initially fly by the main belt asteroid DonaldJohanson, named for the paleoanthropologist who discovered the Lucy fossil. Lucy will then go on to study six diverse and scientifically important Trojans -- Eurybates, Polymele, Leucus, Orus, and the binary Trojans Patroclus and Menoetius -- from August 2027 to March 2033. Credit SwRI Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.