Type Ia supernova (IMAGE) Center for Astrophysics | Harvard & Smithsonian Caption G299 was left over by a particular class of supernovas called Type Ia. Credit NASA/CXC/U.Texas Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. License CC BY-NC 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.