The NWS defines a rainbow as follows: A luminous arc featuring all colors of the visible light spectrum (red, orange, yellow, green, blue, indigo, and violet). It is created by refraction ...

In this instance, atmospheric turbulence caused the light coming from Venus ... As this happens, the rainbow effect should still be visible for a few weeks if the conditions are right.

There are three primary colours of light, which can be combined to make secondary colours. A rainbow contains all the colours of the visible spectrum. It is often possible to see a secondary bow ...