Creation of Stickney Crater on Phobos (video) DOE/Lawrence Livermore National Laboratory Share Print E-Mail Loading video... Caption This animation shows one scenario for how the massive crater Stickney could have formed, with a 200-meter object impacting at 8 kps into the 20-km-wide moon. The colored material is moving fast enough to evacuate the forming crater, and the red is moving quickly enough to entirely escape Phobos. Credit LLNL Usage Restrictions None Share Print E-Mail 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.