and sunrise and sunset, and moonrise and moonset, and the earth's shadow on the moon, and different stars being visible from the southern hemisphere, and the apparent rotation of the stars in the sky changing by hemisphere, and being able to see further from elevations, and the phenomena of things disappearing from the bottom-up over horizons, and the existence of seasons, and the existence of time zones, and the coriolis effect, and the fact that antartica actually exists and has been explored by thousands of people, and the fact that satellites exist, and the evidence of actual circumnavigation by plane and boat, and the thousands of images readily available of the earth from space, and ham radio, and the testimony of millions of pilots and tens of millions of people who have climbed mountains and traveled in airplanes, and navigation across seas, and the timing of different aspects of solar flare radiation reaching the earth vs. when it is first observed, and the existence of aurorae, and Eratosthenes experiment of measured shadows, and windstreams and ocean currents, and vulcanism, and the parallax of distant objects, and the motion of planets, and the laws of motion, and of optics, and of inertia, and the existence of the atmosphere, and the measurable fuel consumption of aircraft flying east/west vs west/east, and the magnetic south pole, etc etc etc etc
