[Pez149]

Oh that’s simple,
The dust cleared.
That happens all the time.

[Robert A Cook PE]

? No. “Regular” nova’s trip off routinely.

But they are not powerful enough to burn (fuse) enough lower-weight isotopes ions together, then blow those new atoms out into other stars to make all of the atoms we know exist. A puzzle, too often now solved by “waving of the hands” mythically.