It applies also to non-biological stars and planets in the sense of the evolution of sentient beings who want to become fit to survive in this cosmos.
The tenets of Ecocosmology map out the route or path which the fittest must take in order to master survival instead of becoming extinct.
Those tenets point out that biological evolution only goes a tiny part of the full distance of that route. That aspect of looking forward is focused by a study conducted by some scientists who have done a survey of stars in the milky way galaxy.
They have found that our Sun is of a type of star that only makes up roughly about 10% of the stellar population in our own Milky Way galaxy.
That discovery ends up being very significant in several ways:
The distinction between habitable planets and planets harboring intelligent life is based on the fact that intelligent life requires stars with lifetimes greater than the time required for intelligence to evolve. For example, in the case of this solar system, we could not find ourselves around a star with a lifetime less than 4.5 billion years.(Space). The factor that leaves biological evolution behind on this route toward fitness to survive is the factor that these Suns eventually destroy all the planets in the habitable zone, together with all biological life on them.
Indeed, sun-like stars seem to have the right balance: They are of high enough mass that they are more likely to host habitable planets, but they are of low enough mass that they live long enough for intelligent life to develop, and are not extremely scarce. Whitmire estimates that 10 percent of the Milky Way's stars might fall into the category they've outlined. This would still leave over 10 billion candidate stars in the Milky Way alone.
Survival of the fittest, which Ecocosmology calls "The Test", requires that intelligent life which develops on any habitable planet must develop competent space travel, must develop the ability to locate other younger stars with habitable planets, then must colonize those planets.
As if that were not enough, the tenets of Ecocosmology point out that those intelligent planetary species must then continue that behavior ad infinitum because all stars die out or otherwise destroy life on their planetary neighbors.
Thus, the greater part of survival of the fittest is in developing competent astronomy followed by the development of competent space travel so as to successfully locate then colonize new home worlds.
The bottom line of this area of science is that we are cosmic nomads until, as tenet 3(f) says, we "morph into a species free from that type of solar/planetary cosmic dependence".