Upside-down Rainbow

I recently came across this image of an upside-down rainbow and thought that I would share it with you. The rainbow is apparently rather unusual - where as normal rainbows form when light penetrates raindrops and comes out the other side, this upside-down one is made when it bounces off ice crystals in high-level cirrus clouds, sending rays up towards the Sun. How amazing is that?  Well it made me smile.

Take care


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