Pictures of a distant supernova remnant show two concentric rings, providing clear evidence that exploding white dwarf stars go boom twice in the blink of an eye
Pictures of a distant supernova remnant show two concentric rings, providing clear evidence that exploding white dwarf stars go boom twice in the blink of an eye Pictures of a distant supernova remnant show two concentric rings, providing clear evidence that exploding white dwarf stars go boom twice in the blink of an eye