This hellish exoplanet's skies rain iron and create a rainbow-like effect 

 The CHEOPS mission has seen tantalizing hints of the rainbow-like glory effect over WASP-76b, an extreme world where iron  rains heavily on one side of the planet. 

https://cdn.mos.cms.futurecdn.net/QuLMTyuN9o2jYMSc6guoF6.png

https://www.space.com/hellish-exoplanet-rainbow-glory-effect-cheops