Interview with Brad Tucker (VIDEO) Australian National University This video is under embargo. Please login to access this video. Caption Dr. Brad Tucker discusses the first observations of supernova ignition which are challenging theories of how they form. Credit ANU multimedia 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.