In the early 1950s, US planes were conducting low-flying recon missions over the USSR. But there were constant ... the development of a top secret, high-altitude recon aircraft dubbed Project ...

Although the scientists had notified dozens of countries, including Russia, in advance of their high-altitude scientific experiment, the information never made its way to Russia’s radar technicians.

While the device is deceptively simple, it is possible to get a balloon to very high altitudes without ... though. The Soviet Union was keenly interested in Piccard’s flight, and the Soviet ...