Unexplored Vision™ on Instagram: "Many people are surprised to learn that you can’t see Earth’s curvature with the naked eye—from the ground or even from a typical airplane. That’s not because Earth is flat. It’s because Earth is enormous. With a circumference of about 40,000 kilometers, the planet’s curve is incredibly gradual. Over short distances, the bend is so slight that the human eye simply can’t detect it. To us, the horizon looks straight… because our everyday perception isn’t built for