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 ...

But what about the “end” of the rainbow? The truth is, there isn’t one. A rainbow is a full circle, but from the ground, we only see part of the arc. The “end” that seems to touch the ...