High-altitude balloon

High-altitude balloon

Jesse Russell Ronald Cohn

     

бумажная книга



ISBN: 978-5-5123-3445-4

High Quality Content by WIKIPEDIA articles! High-altitude balloons are unmanned balloons, usually filled with helium or hydrogen that are released into the stratosphere, generally reaching between 60,000 to 120,000 feet (18 to 37 km).