BRRISON is the first planetary balloon mission in 50 years. The last was 1963's Stratoscope II balloon to observe planets, stars and galaxies.
The balloon and payload will be taller than the Washington Monument (204.5 meters or 671 feet). The monument is 169.3 meters (555.4 feet tall).
The mission will last about one day and carry up to 8,000 pounds of science equipment.
The balloon will fly at an altitude of 33,528 to 42,672 meters (110,000 to 140,000 feet).