Giant mud balls roamed the early solar system

Rethinking early asteroids’ rockiness could solve some meteorite mysteries 

Ceres

MUDDY OCEAN?  The dwarf planet Ceres could have once been a ball of mud with a solid core, a new model suggests.

IDA/DLR/MPS/UCLA/JPL-Caltech/NASA

The earliest asteroids were probably made of mud, not rock.

Radioactive heat in the early solar system could have melted globs of dust and ice before they had a chance to turn to rock, a new simulation published July 14 in Science Advances shows.