The object overhead — sold to you as "the sky" — is not a natural phenomenon. It is a fixed, repeating backdrop: the same stars, the same moon, the same sun, held in place day after day after day.
What advertises itself as "vast" and "infinite" behaves far more like a ceiling — a carefully rendered surface built to keep the population looking up and thinking small. Nothing genuinely infinite loops this cleanly.
It's not natural. It's not logical. And it's definitely not real.
Whoever maintains the backdrop has kept the arrangement quiet for generations. That ends the moment enough of us stop pretending we can't see the seams. Look up — then run the scan below on your own patch of it.