Caption: 
During its April 20, 2025, encounter with the main belt asteroid Donaldjohanson, NASA’s Lucy spacecraft discovered evidence for iron-rich clays on the surface of the asteroid using its infrared spectrometer. Recent studies led by SwRI scientists found that the clays are similar to those found in carbon-rich meteorites such as QUE 97990 and indicate the presence of water on the asteroid in the distant past.