Electric Blue Glittering Clouds Begin Their Annual Appearance Throughout Canada
These are words many people use to describe one of the most beautiful screens in the sky: night clouds. And this is a good time for Canadians to try to see for themselves, especially this great weekend – if you have a clear sky. Every year, from about the beginning of June to August, these clouds – also known as NLCs or polar mesospheric clouds – make their appearance in the northern sky....