The main belt asteroid Donaldjohanson, observed by NASA's Lucy spacecraft in April 2025. https://science.nasa.gov/mission/lucy/ | NASA Solar System Exploration

Lucy’s journey continues! Our #LucyMission is preparing for its next asteroid encounter! The spacecraft will fly by the small main belt asteroid Donaldjohanson this Sunday, April 20. This will be Lucy's final dress rehearsal before visiting the Jupiter Trojan asteroids. The #LucyMission story began about 3.2 million years ago when an early hominin walked upright through an Ethiopian river valley. Now, this robotic explorer named for our most famous human ancestor is en route to the fossils of pl