Comment Not really a problem (Score 2) 23
If you invite one of these into city, say goodbye to what's left of your night sky.
I had a hotel room in Vegas overlooking the Sphere.
After around 10pm or so, the Sphere just turns into showing the moon slowly rotating - so no flashing colors, all gray tones, and also not as bright.
Plus if you think about it the mini-spheres would have a far smaller outside anyway, meaning effects on night sky are probably no worse than a Wal-Mart parking lot, and they would be in the middle of cities with a ton of light pollution anyway (very true of Vegas) so they would not be spoiling anything near pristine.