Carbon has multiple solid forms , including diamond and graphite . The Juno spacecraft will arrive at Jupiter in 2016 , and the Cassini spacecraft will dive into Saturn in 2017 , collecting information about the gravity fields and magnetic fields of these planets . On Earth , carbon could turn into diamond at high temperature and pressure . No carbon has gone this far into the atmosphere of the outer planets .
Carbon has multiple solid forms , including diamond and graphite . On Earth , carbon could turn into diamond at high temperature and pressure . No carbon has gone this far into the atmosphere of the outer planets .