[_Codemonkeyism]

Amazing. Also amazing to me is the caluclation of the size of the moon and distance of the earth from the sun around the same time [1] [2]

[1] https://en.wikipedia.org/wiki/On_the_Sizes_and_Distances_(Ar...

[2] https://en.wikipedia.org/wiki/Hipparchus#Distance,_parallax,...