Scientists believe that two asteroids might be fragments of long-lost "planetary embryos" from the early solar system.
These embryos, somewhere between small planetesimals and fully formed planets, were abundant during the solar system's formative stages and played a critical role in planetary formation. Two asteroids in the main asteroid belt between Mars and Jupiter, (246) Asporina and (4125) Lew Allen, are the subject of a new study that has found they could be leftover pieces from these embryos forged in the earliest days of our cosmic neighborhood.
