Planet Impact Simulation (IMAGE) Durham University Caption Cross-section snapshots of 3D simulations of giant impacts using 30 to 100 million particles, coloured by their material or their internal energy, related to their temperature. Credit Jacob Kegerreis, Durham University Usage Restrictions None License Licensed content 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.