As with the terrestrials, planetesimals in this region later coalesced and formed 20–30 Moon- to Mars-sized planetary embryos; however, the proximity of Jupiter meant that after this planet formed, 3 million years after the Sun, the region's history changed dramatically.
如同类地行星，这一区域的微行星后来合并形成20到30个月亮到火星大小的行星胚胎； 但是因为在木星附近，意味着太阳形成3百万年後这一区域的历史发生了巨大变化。