MYTH VS REALITY
Most "proofs" of the globe are just globe interpretations of ordinary observations. Strip away the interpretation, look at what's actually seen, and the flat, level earth explains it better — every time.
Ships disappear hull-first over the horizon — this has proven the globe since ancient times.
What you actually see is the ship getting smaller until the waves and the limits of human vision hide its hull — a perspective effect, not curvature. Bring out a zoom lens or telescope and the whole ship comes right back into view, hull and all. If it had gone "over" a curve, no amount of zoom could restore it.
Eratosthenes measured the earth's curvature in 240 BC with two sticks and their shadows.
Eratosthenes measured shadow angles — then assumed a distant sun and a curved earth to interpret them. The same angles are produced by a close, local sun over a flat plane; the angles alone can't tell the two apart. It's an assumption, not a measurement of curvature. Nobody has ever measured the radius of the earth directly.
You can see the curvature of the earth from an airplane window.
At 35,000 feet, the horizon should curve noticeably on a globe — but what you see is a perfectly straight, level horizon that rises to eye level. The only "curvature" people report comes from fisheye airplane windows and camera lenses. High-altitude balloon footage with non-fisheye lenses shows a flat, level horizon every time.
Gravity is so strong it holds entire oceans stuck to a spinning ball.
Gravity is said to be strong enough to bend trillions of tons of ocean around a spinning sphere — yet weak enough that a bird, a butterfly, or a helium balloon defeats it effortlessly. And it's never been demonstrated in a lab as the earth-holding force the theory requires. The simpler explanation: density and buoyancy. Things sink because they're denser than the medium, float because they're lighter — and water stays level because it's level.
The Foucault pendulum proves the earth rotates beneath it.
Foucault's pendulum drifts in its swing plane — but the drift is erratic, inconsistent, and stops or changes behavior in many demonstrations. If it truly proved rotation, it would work identically everywhere, every time. It's a pendulum with a wobble, dressed up as cosmology. Museum pendulums often need motors to keep the show going.
Seasons prove the earth tilts and orbits the sun.
Seasons are exactly what you'd expect from a sun that spirals between the Tropic of Cancer and the Tropic of Capricorn over the flat plane, moving closer to the center and farther out over the year. The sun's changing path creates the seasons — no tilted, racing-through-space ball required. The analemma (the sun's figure-eight path photographed over a year) matches the spiral-sun model beautifully.
Lunar eclipses show the earth's round shadow on the moon — proof it's a sphere.
A flat disc can also cast a round shadow — hold a coin over a light and the shadow is circular. And there are documented selenelion eclipses where both the eclipsed moon and the sun are visible above the horizon at the same time — impossible if the earth's shadow is doing the covering. The shadow is round; the claim that it proves a sphere is not.
You can circumnavigate the globe — sailing all the way around proves it's a sphere.
Every famous circumnavigation has been east-west, around the plane — exactly what a compass-guided loop around the North Pole on a flat map produces. What has never been done, in all of history, is a true north-south circumnavigation over both poles. Flying "around the world" east-to-west works on the flat map; only the poles remain conspicuously untraveled.
GPS proves satellites orbit a globe — you couldn't have GPS without space.
GPS, like LORAN before it, works off ground-based tower triangulation — your phone gets its fix from cell towers and known reference points. "Satellite" GPS signals would be too weak, traveling from thousands of miles away with a tiny transmitter, to be picked up by a phone with no dish. High-altitude balloons, drones, and ground towers do the same job the "satellites" claim to do.
NASA has photographed the earth from space — the famous Blue Marble is real.
NASA's own imaging staff have admitted the Blue Marble is a composite — stitched, rendered, and colorized in Photoshop, not a photograph. Every "earth from space" image is CGI or a composite; there is no continuous, unedited video of a spinning globe from orbit. The one entity that claims to photograph the globe is the same one funded to tell you it's a globe.