The mesosphereis a cube?
Heh, apparently so, and the sun is located in it. I think we’ve found the cause for global warming. Also, there is a grid pattern all throughout space.
Life, like a dome of many-colored glass, stains the white radiance of eternity.
When there’s intermittent cloud cover stretching to the horizon, the clouds at the very limit of vision can be as much as a hundred miles away, enough that they are appreciably tilted away from your local “down”. So like Broomstick said, the atmosphere really is like a dome.
Wow… I had no idea the atmosphere was so large! I thought it was relatively thin, like an orange peel.
Silly nerds. The sky looks like a dome because Ed Harris wills it.
I think the OP has the question the wrong way round. The sky looks really, really big. People who want to build a structure that is really, really big do their best to imitate the shape of the sky. A dome is the best they can come up with.
You don’t have to think about eons ago. Apart from celestial objects, the things you’re most likely to see in the sky are clouds. A cloud above you may possibly be 30,000 - 40,000 feet up but is more likely to be 5,000’ - 10,000’ or lower. 10,000’ is about 2 miles. Earthly things directly above you really aren’t very far away.
The eons ago part was for time for evolution to hardwire our brains to some extent.
And though clouds above are closer than stuff torwards the horizon is true, the diffence between what practically mattered to humans above vs forward is even greater. The top of a tree vs walking miles to the horizon.
As for perception. I see the sky, particularly the night sky, as a big dome. But I’ve been a serious amateur astronomer for a long time, so my mental picture of what I see is probably different than some one just looking at pretty stuff.
But I have noticed if I try not to think about it too hard, even letting myself zone out so to speak, the impression of a very flattened dome reappears in my mind.