On Dec. 30, 1930, the first-ever photo of the Earth's curvature was taken. This photo was taken by Lieutenant Colonel Albert William Stevens, who was an officer in the U.S. Army Air Corps and an aerial photographer. He also happened to be a balloonist, and he once broke a world record for a high-altitude balloon flight. Stevens took this photo while flying in a balloon over South Dakota
And lets not forget Air Force's Joe Kittinger's leap from over 100,000 ft. altitude.
[history.com]
I mean after all, when you get to 20 miles above the earth what are you supposed to do except jump out of the gondola?
Fake news. The Earth is as flat as Trump is smart.