Planet Formation (IMAGE) University of Bern Caption Illustration of planet formation around a Sun-like star, with the building blocks of the planets - rocks and iron molecules - in the foreground. Credit © Tania Cunha (Planetário do Porto - Centro Ciência Viva & Instituto de Astrofísica e Ciências do Espaço) Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. License CC BY-NC Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.