Astronomy.
Not astrology.
Big difference.
The daily, monthly, and yearly motion of objects in the sky, along with the observed illumination pattern on the surface of the earth, simply cannot be explained by a flat earth model. I’ve seen numerous attempts, ewetewb is full of them, and they all fail miserably. Flat earth videos do a great job of disproving flat earth.
I flew in a plane recently and saw the curvature of the earth. If the earth is flat why does a flight from Chicago to Dubai go over Greenland if the shortest distance between to points is a straight line. If the world was flat the flight path would go straight over the Atlantic Ocean over the Strait of Gibraltar.