Joanna Drążkowska

New Capabilities

As of September 2026: Co-author of the study

The solar system's first solid bodies were built mostly from heat-forged rock, not ice. Chemical tracers in ancient iron meteorites show the earliest planetesimals were 83% to 92% chondrules, with only 8% to 17% of the fine, ice-rich dust scientists call matrix.

Updated Sep 23