I'm surprised nobody has pinned this by now! Video footage from El Teide, the highest mountain in Spain, and one of the best places (As you will see) in the world to film/photograph stars and galaxies. if you've never seen this, I can honestly say
The stunning image is of a rainbow cloud, captured above Mt Everest by Oleg Bartunov whilst on an expedition in the Himalayas, Nepal. The amazing rainbow effect is created when tiny ice crystals in the water vapour of the clouds reflect the sunlight.