Firm conducts 1st test flight to stratosphere using balloons
Russian company Stratonavtika has announced that it has successfully conducted its first test flight to stratosphere using balloons for its manned program. The space suit called "Sokol" and a dummy called "Valera" inside it achieved an altitude of about 25.7 km. The climb was carried out on a cluster stratostat consisting of six balloons filled with helium. 