Nights of Noctilucent clouds

By: P-M Heden


Region: Europe

Country: Sweden

Date: Summer 2013

Turn on the speakers and enjoy this unique collection of night-time scenes by TWAN photographer during several weeks of imaging in the summer nights of Sweden. The high northern latitude of Scandinavia cause very short nights in the summer and only few brighter stars appear in the presence of polar twilight in June and July. But the main show in the sky would be mysterious night-shining clouds known as the Noctilucent clouds or NLCs. They lie near the edge of space, reflecting sunlight from about 80 kilometers above Earth's surface. They are usually spotted above the Polar Regions in summer. P-M Heden,

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