One of the flat earthers favorite 'proofs' is that nobody has actually seen the curvature of the Earth. Look through a telescope and you can see for yourself the curvature of the moon. Sail on the sea with only a clock and astrolabe for navigation.

Utter nonsense.

One of the flat earthers favorite 'proofs' is that nobody has actually seen the curvature of the Earth. Look through a telescope and you can see for yourself the curvature of the moon. Sail on the sea with only a clock and astrolabe for navigation.