Rainbows are a breathtaking natural phenomenon that has fascinated people for centuries. In theory, every rainbow is a circle, but from the ground, we usually only see its upper half. However, when flying, it is possible to see a full-circle rainbow. The reason why we only see the upper half of a rainbow from the ground is due to the Earth's curvature. When sunlight enters a … [Read more...] about The Wonder of Full-Circle Rainbows: A Rare and Stunning Sight from Above