The White Dwarf Star In V407 Cygni (image) NASA/Goddard Space Flight Center Share Print E-Mail Caption The white dwarf star in V407 Cygni, shown here in an artist's concept, went nova in 2010. Scientists think the outburst primarily emitted gamma rays (magenta) as the blast wave plowed through the gas-rich environment near the system's red giant star. Credit Image Credit: NASA's Goddard Space Flight Center/S. Wiessinger Usage Restrictions None Share Print E-Mail 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.