What I want you to imagine is this is two tons in weight. So you're using a balloon to carry something that is two tons all the way to an altitude of 40 km. And the engineers, the technicians, the physicists have
O sea, se usa un globo para llevar algo que pesa 2 toneladas hasta una altitud de 40 km. Los ingenieros, los técnicos, los físicos, han tenido que montar todo sobre la barrera de Ross