Gravitational data from Dawn suggests dome on Ceres is made of volcanic mud
(PHYSorg.com Space & Earth)

An international team of researchers has found evidence that suggests the large dome found on the surface of the dwarf planet Ceres is made of slurry-a mix of salty brine and solid particles. In their paper published in the journal Nature Geoscience, the group describes their study of data from the Dawn spacecraft and what it revealed.