Caption: 
An SwRI-led study modeled the concentration, assembly and preservation of millimeter-sized, spherical mineral grains known as chondrules, shown here in a polarized light micrograph, within the parent bodies of the most common meteorites. The model connects chondrule production and assembly through the dynamics of planet formation. Giant impacts generate circum-embryo disks that concentrate and corral chondrules into chondrule-rich satellites. Orbital liberation turns these primordial moons into the meteorite-producing asteroids seen today.