High-altitude balloon
（重定向自Stratospheric balloon）
![The BLAST high altitude balloon just before launch on June 12, 2005.](/Images/godic/202502/13/BLAST_on_flightline_balloon_filling_kiruna_20051314.jpeg")
![An example image from a hobby high altitude balloon launched by the Make Stuff Club from Kalamazoo College](/Images/godic/202502/13/Shot_from_High_Altitude_Ballon_with_Lake_Michigan1314.JPG")
![Photographed at approximately 100,000 ft (30,000 m) above Oregon using a 1,500 g (3.3 lb) weather balloon.](/Images/godic/202502/13/Picture_taken_at_aprox._100,000_feet_above_Oregon_by_Justin_Hamel_and_Chris_Thompson1314.jpg")
![Lancement d'un ballon stratosphérique](/Images/godic/202502/13/ATIC_launch1314.jpg")
High-altitude balloons are unmanned balloons, usually filled with helium or hydrogen, that are released into the stratosphere, generally attaining between 60,000 to 120,000 feet (11 to 23 mi; 18 to 37 km). In 2002, a balloon named BU60-1 attained 53.0 km (32.9 mi; 173,900 ft).