More ambitious explorations of the outer planets may help us determine if these theories about diamonds will last forever . Carbon has multiple solid states , including diamond and graphite . The carbon atoms are arranged in a hexagonal pattern that is called the honeycomb structure of carbon ( or hexagon ). No spacecraft has gone this far into the interiors of the outer planets .
Carbon has multiple solid states , including diamond and graphite . The carbon atoms are arranged in a hexagonal pattern that is called the honeycomb structure of carbon ( or hexagon ). No spacecraft has gone this far into the interiors of the outer planets .