They’re often seen as lucky, but try to find the end of the rainbow in this incredible image and you might struggle.

NASA has revealed a stunning photo of what looks like a circular rainbow surrounding the moon.

The colourful rings are actually a corona, which appeared around the full moon above Turin, Italy in 2014.

NASA has featured the image, snapped by photographer Giorgia Hofer, as its Astronomy Picture of the Day.

The space agency explained: “The effect is created by the quantum mechanical diffraction of light around individual, similarly-sized water droplets in an intervening but mostly-transparent cloud.

 

“Since light of different colours has different wavelengths, each colour diffracts differently.

“Lunar Coronae are one of the few quantum mechanical colour effects that can be easily seen with the unaided eye.”

While similar coronae often form around the sun, these tend to be more difficult to see than lunar corona.

NASA added: “Similar coronae that form around the Sun are usually harder to see because of the Sun's great brightness.”

This isn't the first time that NASA has featured a rainbow photo as its Astronomy Picture of the Day.

Supernumerary Rainbow

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NASA Astronomy Picture of the Day

Last year, NASA photographer, John Entwistle, captured a breathtaking image of a rare ‘hall of rainbows ', which appeared after Hurricane Florence passed over New Jersey.

The incredible rainbows, otherwise known as supernumerary rainbows, faded in an out for around half an hour, much to the delight of the photographer.

Supernumerary rainbows form when falling water droplets are all nearly the same size - typically around one millimetre in diameter.

As sunlight hits the water droplets, it both reflects from the inside of the raindrops and interferes - creating a ripple effect.

In the early 1800s, scientists actually considered supernumerary rainbows evidence of light’s wave nature.

Mr Entwistle's work can be found on his Facebook , Instagram and website .