Imagine . . .
A Universe where the only star which radiated light visible to humans was the Sun. Maybe if our eyes were a bit less sensitive to light.
We could see the Sun, Moon, and that's it. The only telescopes would be used to view the Moon and the few planets which would show up from time to time.
What would that have done to our view of ourselves, our "homo sapien" -centricity?
And then what people would have thought when radio was developed. And then interference was noted, and radio telescopes built. I wonder what the first operators of those would have thought.
Kinda fun to think about for a minute.
Arf
