Galaxy collision.mp4 (video) Durham University Share Print E-Mail Loading video... Caption A simulated collision between two gas-rich galaxies. Part of the gas is ejected in large tails and as the galaxies get closer they merge to form a single system. Credit Jeremy Fensch, et al 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.