The top pic taken at the peak of Mount Everest.
Elevation 29,000 feet. This is 6,000 feet below the average cruising altitude of a jetliner. This much curve at this altitude is produced by a fish eye lense on the camera.
Or maybe we have all been lied to and Mount Everest is really. 18,000 miles high!!!
Research Flat Earth. You have been lied to.