2 Spiral Galaxies Colliding (VIDEO) NASA/Goddard Space Flight Center This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption Two spiral galaxies undergo a protracted crash lasting two billion years, eventually merging into a single elliptical galaxy. Credit NCSA/NASA/B. Robertson (Caltech) and L. Hernquist (Harvard Univ.) 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.