The idea of an huge baloon flying in the skies above us is being sold to us as

The idea of an huge baloon flying in the skies above us is being sold to us as "new and revolutionary", but is indeed more than a 100 years old. Auguste Piccard was the first man to fly in the troposphere at a height around 52 000 feet and he said right after the flight that the earth looked like an disc with upturned edge. Research flat earth.