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Merriam-Webster on ecology: "a branch of science concerned with the interrelationship of organisms and their environments"

Humans are organisms. Humans go to space, and will go there more with it getting cheaper. Orbital space is an environment. Debris collisions are an ecological concern for spacefaring organisms.

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That's a usefully expansive definition of ecology. Next time somebody in my household forgets to put the toilet seat down, I'm going to lodge an 'ecological' complaint with them. After all, I am an organism and bathrooms are an environment; it ticks all the boxes.

Less snark: I think definition (or more accurately, your expansive interpretation of it) misses the spirit of the way that word is generally used.

Generally ecology requires multiple species in interrelationship. Not really an ecosystem without inter play between organisms (species) and the environment. I also don't see classes being taught covering space ecology, so I don't feel it fits.

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