Definitely an AI fake.

A complete Rainbow... photo was taken at around 30k ft above the Earth. On the ground, we usually only see the arc half of the circle.
Credit Photo: Lloyd J Ferraro
There seems to be doubt about the authenticity of the pic:
https://www.reddit.com/r/Damnthatsinteresting/comments/11c6yii/complete_rainbow_taken_from_30000_ft_in_altitude/

More details/photos: http://bit.ly/3SvxXbw

Complete Rainbow taken from 30,000 ft in altitude. Photo by pilot - Lloyd J Ferraro

Posted in r/Damnthatsinteresting by u/cenabollywood β€’ 5,328 points and 106 comments

reddit
'CAPT Lloyd J Ferraro Jr." | National Air and Space Museum

Rainbow at 30,000 Feet: Pilot’s Photo Captures Rare and Breathtaking Sight

A rare sight was captured from the cockpit of a commercial airplane as pilot Lloyd J Ferraro took a stunning photograph of a complete rainbow from an altitude of 30,000 feet. The breathtaking image shows

Hasan Jasim