Four days later, at the Sixth Congress of International Astronautical Federation in Copenhagen, scientist Leonid I. Sedov spoke to international reporters at the Soviet embassy, and announced his country's intention to launch a satellite as well, in the "near future" [REF].
The British-American survey of the Atlantic, carried out between September 1954 and July 1959, that discovered full length of the mid-Atlantic ridges (plate tectonics), was a major discovery during the IGY [REF].