A nova is a sudden, short-lived brightening of an otherwise inconspicuous star. It occurs when a stream of hydrogen from a companion star flows onto the surface of a white dwarf. New observations of V906 Carinae, a nova that is about 13,000 light-years away in the constellation of Carina, by NASA’s Fermi Gamma-ray Space Telescope and Nuclear Spectroscopic Telescope Array (NuSTAR), the Canadian BRITE-Toronto satellite and several ground-based facilities...
