I suppose it would depend on the context of the discussion. Evolution can be defined as a gradual development of some thing. This thing does not necessarily ha

I suppose it would depend on the context of the discussion. Evolution can be defined as a gradual development of some thing. This thing does not necessarily have to be defined as life. Since celestial formations develop from a starting state then yeah, they can be considered evolution. In the context of the conversation as it pertains to life, I would imagine that a discussion of evolutionary life would start at the moment a given thing becomes capable of change as it replicates.