 Yeah, and a nova is different from a supernova because in this case, the white dwarf remains intact and the cycle can repeat over time. A supernova is only the final explosion of a dying star, so the white dwarf wouldn't exist anymore if it was a supernova. You said it's happening this summer. When should we be looking at the sky to see this? Yeah, so it could happen at any moment between now and September. And once it does happen, it'll be visible for us for a little less than a week.