1. www.psrd.hawaii.edu/Sept07/cosmicSpherules.html Cosmic spherules are micrometeorites that melted when they plunged through Earth’s atmosphere. Thousands have been collected from Antarctic ice. Melted Crumbs from Asteroid Vesta

2. www.psrd.hawaii.edu/Sept07/cosmicSpherules.html Fe/Mn and Fe/Mg ratios distinguish chondrites (shaded region) from 7 achondrites (blue points) The achondritic cosmic spherules plot near the dashed line for values typical of HED (basaltic) meteorites Plagioclase in one of the achondritic cosmic spherules has similar composition to that in HEDs Melted Crumbs from Asteroid Vesta

3. www.psrd.hawaii.edu/Sept07/cosmicSpherules.html The HEDs have reflectance spectra that match spectra from asteroid 4 Vesta, implying Vesta is their parent body. Thus, these cosmic spherules may be crumbs from Vesta. Melted Crumbs from Asteroid Vesta