Editing Openai/6921ae73-3700-8000-8ab7-90012976bb8a (section)

==== Yes in principle: ====
* Supernovae create and spread heavy elements and compress gas clouds.
* Normally this helps trigger new star formation.

BUT in your scenario:
* If literally every star is gone, we’ve killed the whole existing stellar population.
* Some gas clouds would reform and new stars could eventually appear, but: - The universe would go through a long, chaotic, violent phase first. - Any previous civilizations or life forms? Gone.

So you’d get:
# A bright, horrifying flash era (everything exploding).
# A long, messy after-era of expanding gas, radiation, and compact leftovers.
# Possibly, very slowly, a second generation of stars in some places.

===== If every star went supernova: =====
* All planetary systems (including ours) would be destroyed or sterilized.
* The universe would be flooded with deadly radiation.
* Stars would be replaced by black holes, neutron stars, and debris.
* Galaxies would survive as structures, but full of remnants instead of shining stars.
* Life as we know it would be basically wiped out everywhere.

If you want to go even more extreme, we can try:
* “What if every black hole in the universe suddenly evaporated at once?”
* or “What if every star turned into a black hole instead of a supernova?”