Nova explosions occur in semi-detached binary systems containing a cool late-type star and a white dwarf. "A hot white dwarf star, about the size of the Earth but having mass comparable with that ...

T Coronae Borealis (T CrB) is reappearing in the spring night sky, so be ready in case it goes nova. T Coronae Borealis ... Next, locate Vega, a brilliant blue-white star in the Lyra constellation ...