Curtis Struck, Iowa State University (IMAGE) Iowa State University Caption Iowa State's Curtis Struck has studied galaxies for 30 years and earlier this year published a book about galaxy collisions. Credit Steve Jones/Iowa State College of Liberal Arts and Sciences. 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.