Rainbows, with their bright bands of colors appearing in the sky, captivate both young and old. But what causes this natural phenomenon? Sunlight appears white but is actually composed of all the ...

At school we learn the colors of the rainbow by using the acronym ROYGBIV or the mnemonic: “Richard Of York Gave Battle In Vain” (both of which represent the Newtonian spectrum: red, orange, yellow, ...

Rain and sunlight are the key ingredients of rainbows, but many other environmental factors are required to consistently pull off this visual trick, as new research shows. “Rainbows are some of the ...

There are a couple of different ways that cloud inversions can produce optical effects, explains one of our readers ...

Icelandic residents were given a stunning visual treat when a rare lunar rainbow appeared in the night sky last week. The lunar rainbow, or "moonbow," could be seen just outside the town of ...