https://shop.astronomerswithoutborders.org/products/awb-onesky-reflector-telescope
The rings change throughout the year, so if the earth is engineered, that is, too.
But I smoked cigars with this guy who had wild tales of riding on a big, white rocket-powered glider thing with his coworkers, and he assured me the earth was round because he got going fast enough to fall and not hit it for a few days.