An article published in the journal “Science Advances” reports the results of sophisticated analyzes indicating that IIE iron meteorites are fragments of a planetesimal that had a differentiated structure. A team of researchers conducted various types of tests that gave these results about meteorites called achondrites, composed of materials that were subjected to melting, differentiation, and crystallization. The difference compared to chondrites, meteorites composed of undifferentiated materials, shows that the objects they come from formed and evolved in different ways in space and time.