SORU: boşluğa uygun düşen cümleyi bulunuz
S. A. Andree's Arctic balloon expedition of 1897 was an ill-fated effort to reach the North Pole in which all three members of the expedition perished. The first Swedish balloonist, proposed a voyage by hydrogen balloon from Sweden to either Russia or Canada, which was to pass, with luck, straight over the North Pole on the way. Their dead bodies could only be found 33 years later.