samlak
samlak 1. Heliocentrism: Copernicus, 1543
One of the greatest insights ever, conceived by some ancient Greeks but established only two millennia later: the Earth revolves around the sun (as do other planets). It’s Number 1 because it was the first. Where did you think word revolutionary came from, anyway? (It was only rarely used to mean what it does today before Copernicus put revolutions in the title of his revolutionary books.
