Stanisław Lem wrote a story about a trio of scientists who recreate Sun's environment in a lab and discover it supports life & evolution which goes zero to sun-

Stanisław Lem wrote a story about a trio of scientists who recreate Sun's environment in a lab and discover it supports life & evolution which goes zero to sun-worm in the time it takes for the experiment to blow up, implying existence of lifeforms inside the Sun so advanced that they just don't bother to communicate with humans.