What is that circle around the moon

Earthsky.org says, halos are a sign of high thin cirrus clouds drifting 20,000 feet or more above our heads.In a year where nothing feels normal, the ring around the moon tonight is very normal.These clouds contain millions of tiny ice crystals.The ring you describe is what atmospheric scientists call a halo or glory. it probably looked something like this: nope, no big circle around the moon here… perhaps you are in a different part of the world to me?

It results from the moon's light being refracted by ice crystals in cirrus clouds in the upper troposphere at an altitude of approximately 6000 meters (20 000 feet).Fogbows are white like lunar halos but form low to the ground.The phenomenon of a lunar halo is similar to a rainbow produced by sunlight and rain falling between your eye and the sun.12 fire engines called to pinewood studios fire.