Karl Friedrich Gauss suggests contacting the Selenites (the inhabitants of the Moon) by cutting trees in the Siberian forest in the shape of a right-angled triangle with squares on the sides to represent the Pythagorean theorem.
Karl Friedrich Gauss suggests contacting the Selenites (the inhabitants of the Moon) by cutting trees in the Siberian forest in the shape of a right-angled triangle with squares on the sides to represent the Pythagorean theorem.