The conceptual image of this research (IMAGE) National Institutes of Natural Sciences Caption A classical nova explosion occurs in a close binary system consisting of a white dwarf and companion star. Gas from the companion star accumulates onto the white dwarf, triggering a thermonuclear runaway that blows newly formed elements out into space. Credit Kyoto Sangyo University 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.