SAN FRANCISCO (KGO) -- Have you ever seen a halo-effect or ring around the moon? Known as a moon ring, a winter halo, or a 22-degree halo, it's when "ice crystals suspended high above in thin wispy ...
If you looked up at the night sky during the past 24 hours, you might have seen a ring around the moon. Viewers from all over the nation and even in other parts of the world were able to see the halo, ...