@Usagi 6 June 2021 more from that month

The shortest distance between two points in a sphere is not a direct line like in the Euclidean geometry that works in a bi-dimensional plane like a piece of paper Airplanes follow a route to allow to save time, fuel an shorten the distance. This is called Geodesic Curve . . . it demonstrates that Earth is not flat. |Ctto| Any flat earthers here? 🤪