A Space Phenomenon

Question

Answer 1

Snapshot answer

It’s a “lunar halo”, a rare visual phenomenon spotted in the skies over parts of England on Saturday evening. The radiant ring, caused by the refraction of moonlight by ice crystals in the atmosphere, can be a sign that rainfall is on its way. Click here for more images.

Answer 2

I have seen lunar coronas on rare occasions.

Answer 3

It wasn’t like that in Wales on Saturday evening.

Answer 4

You can sometimes also see halos around outdoor street lights when there is mist.

It's similar to what causes rainbows, but without the internal reflection in the drops of mist.

Answer 5

I see it sometimes.