Overview

• Dinkinesh's rotation accelerated due to the YORP effect, causing structural changes and debris ejection.
• A large piece of Dinkinesh broke off, forming a trough and a ridge on the asteroid's surface.
• The debris from Dinkinesh coalesced to form Selam, a contact-binary moon with two similarly sized lobes.
• Selam is the first observed contact-binary moon orbiting an asteroid, providing new insights into asteroid formation.
• Lucy will continue its mission, next visiting the asteroid Donaldjohanson in 2025.