Shot of NLC’s from the balcony. It’s been a few years since I’ve seen a display of Noctilucent Clouds to the North. For those unfamiliar with these clouds, Noctilucent Clouds (NLCs) are rare, high-altitude clouds that glow a ghostly blue or silver after sunset. They form in the mesosphere in the coldest part of Earth’s atmosphere, at extreme altitudes of around 76 to 85 km (47 to 53 miles) above the surface, making them the highest clouds in our atmosphere. #NoctilucentClouds #yyc #Calgary