Every rainbow is a circle, but from the ground, only its upper half can be seen. Pilots have noticed full-circle rainbows outside their plane windows, proving that if you get high enough, you can see a rainbow in its entirety.
fact
Every rainbow is a circle, but from the ground, only its upper half can be seen. Pilots have noticed full-circle rainbows outside their plane windows, proving that if you get high enough, you can see a rainbow in its entirety.