but that’s only half of what is really a circle of color. Normally, when you look at a rainbow, the Earth’s horizon in front of you hides the bottom half of the circle. But if you are standing ...

with each droplet contributing just one color to your view. This all combines to produce the rainbow we see. If you're high enough in the sky, the rainbow actually appears as a circle. But from ...

Instead of the bright, well-defined colors of a rainbow, a fogbow looks pale or mostly white. These misty arcs show up when sunlight shines through fog, often in coastal areas. But the fog can’t ...