Before revision: 180px|Official emblem of the IGY The International Geophysical Year (IGY; ) was an international scientific project that lasted from 1 July 1957 to 31 December 1958.
After revision: , also referred to as the third International Polar Year,180px|Official emblem of the IGY The International Geophysical Year (IGY; ) was an international scientific project that lasted from 1 July 1957 to 31 December 1958.