Ah, "unsustainable" meaning it annoys earth-bound astronomers. Cell phones in general must be unsustainable then, since they annoy radio astronomers. Actually

Ah, "unsustainable" meaning it annoys earth-bound astronomers. Cell phones in general must be unsustainable then, since they annoy radio astronomers. Actually, we can sustain this just fine. The public derives virtually zero measurable benifit from astronomy, particularly the sort done from Earth.