The Earth may be rare but self perpetuating intelligent systems may not be. The chaotic fluid dynamics of some gas giant, star, or accretion disk could spontan

The Earth may be rare but self perpetuating intelligent systems may not be. The chaotic fluid dynamics of some gas giant, star, or accretion disk could spontaneously form an intelligence given enough time the same way we evolved from a chaotic system here on Earth. There must be something like the Drake equation but for how many large chaotic systems need to exist for something to evolve that can perform non-trivial computation. Like an estimate for how many Solaris planets may exist in the universe.