Just read somewhere that the shortest path between two locations is an arc and not a straight line! eli5 how an arc is the shortest path for planes.

Question

Just read somewhere that the shortest path between two locations is an arc and not a straight line! eli5 how an arc is the shortest path for planes.

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Answer 1

In very simple terms: The Earth is not flat. Go on to one of the flight tracking apps and see the routes planes take. They look odd on a two-dimensional map, but not on a globe.