We're not talking about pollution (as in the stuff in the air), but rather, the light itself, outshining the night sky. Although delete is poor wording, it still essentially carries the same meaning as "get rid of" or "eliminate".
I know delete is poor wording. I used it as a joke.
It seemed like the guy who came up with that thought that if you turn off lights that the pollution will immediately disappear, or "be deleted".
It seemed like the guy who came up with that thought that if you turn off lights that the pollution will immediately disappear, or "be deleted".