Nova explosions occur in binary star systems in which a white dwarf—the dense remnant of a dead star—continually siphons stellar material from a nearby companion star. As the outer atmosphere of the companion gathers onto the surface of the white dwarf it reaches temperatures hot enough to spark an eruption. Nova explosions occur in binary star systems in which a white dwarf—the dense remnant of a dead star—continually siphons stellar material from a nearby companion star. As the outer atmosphere of the companion gathers onto the surface of the white dwarf it reaches temperatures hot enough to spark an eruption. Astronomy Phys.org – latest science and technology news stories
Gemini South observes ultra-hot nova erupting with surprising chemical signature
