So, you don't believe in space travel? How about photos at various points around the edge taken from an aircraft?
Bless my space-boots
Flat Earth zealots don't believe in aircraft, photograpy, space travel, maps, gravity, compasses, a third dimension, time zones, Capt James Cook, lunar eclipses, shadows, satellites, tides, GPS, magnetic fields, astronauts, an equator, shadows, orbital rotation, submarines, sextants, auroras, mathmatics, airlines, seasons, electromagnetic radiation, Antarctica, telescopes, The Moon, latitude, The International Space Station, curves, Isaac Newton, ships, The Planet Earth, air-traffic control, sunsets, cartographers, satellite TV, solar flares, Eratosthenes, South, The Solar System, history, science, time or exploration.
They can't even be sure if they exist themselves.