Ships actually recede over the horizon, disappearing hull-first. In a flat-earth model, they should simply get smaller and smaller until no longer visible, assuming that light travels in a straight line.
You can recreate these circumstances with an ball and an toy car.
Travelers going south see southern constellations rise higher above the horizon. This is only possible if their "straight up" direction is at an angle to northerners' "straight up". Thus Earth's surface cannot be flat.
These points are in my mind everytime I read this forum, and I just had to register to ask them.
I want an answer.
I, myself as an scientist with many grades, am open to discussion on these things, and if one can give me enough material to prove his theory, I can easily believe it myself.
But, on these forums, I have seen unsufficient prove or anything of that matter. This leads me to believe that this society has been called into life just for creating arguments without believing their own stance.
I am not here to bash. I am here to pose a few questions and I would appreciate an answer on these.
This leads me to my final point:
The border of the shadow of Earth on the Moon during the partial phase of a lunar eclipse is always circular, no matter how high the Moon is over the horizon. Only a sphere casts a circular shadow in every direction, whereas a circular disk casts an elliptical shadow in most directions.
Answer me, please.
I am always open to learn new things.