Ground-based astronomy could be impossible in 40 years because of pollution from aircraft exhaust trails and climate change, an expert says.
I would most definately say that we need to consider some more directed efforts in air corridors. It seems to me that if we have a concentration of observation towers, and big ELT devices, we need to make sure they work flawlessly.
I am not saying it will be easy, but we should seriously consider different international directives for air corridors, and land based viewing needs. The same principles can be applied for any world-wide effort. If we don't get together and make up some better rules, we will all suffer for it.
Lets make several areas around the world permanent no-fly zones protected by the military, and have our telecopes there. Of course, if we built more space stations, or hubble-like telescopes that could be alleviated as well.
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