Clouds vs Noctilucent Clouds ᐉ

Clouds passing in a timelapse video of a summer midnight in Sweden. Beyond the regular dark clouds bright electric blue Noctilucent Clouds (NLC) appear. They are so high that still reflect the sunshine. These night-shining clouds lie near the edge of space, about 80 kilometers above Earth’s surface. They are usually spotted above the Polar Regions in summer.