Category:Noctilucent clouds

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Noctilucent clouds, also known as polar mesospheric clouds, are very high (typically 80 km or 50 mi) cloud-like phenomena in the upper atmosphere, visible in a deep twilight. They are made of crystals of water ice. The name means roughly night shining in Latin.

They are also distinct from Polar stratospheric clouds (also called Nacreous clouds), typically only 20 km (66,000 ft) high.

noctilucent cloud 
Here you see the highly elevated crystals cloud formation during the twilight of the night
Helkivad ööpilved Kuresoo kohal.jpg
Torbera Kuresoo, Parc Nacional Soomaa, Estònia
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Nube mesosférica polar (es); Éjszakai világító felhő (hu); Күміс түсті бұлттар (kk-kz); Silfurský (is); Серебристые облака (ru); Leuchtende Nachtwolke (de); Серабрыстыя воблакі (be); ابر شب‌تاب (fa); 夜光云 (zh); lysende natsky (da); Nor noctilucent (ro); 夜光雲 (ja); Nattlysande moln (sv); Сріблясті хмари (uk); 夜光雲 (zh-hant); 夜光云 (zh-cn); 야광운 (ko); Күміс түсті бұлттар (kk); Nìvola neuit-lusenta (pms); noční svítící oblak (cs); 夜光雲 (zh-hk); nubi nottilucenti (it); 夜光云 (zh-hans); Nuage noctulescent (fr); Noćni svijetleći oblak (hr); Helkivad ööpilved (et); Scamall oíchelonrach (ga); Lichtende nachtwolk (nl); Luma nokta nubo (eo); Nočné svietiace oblaky (sk); Núvol noctilucent (ca); 夜光雲 (zh-tw); Nuvem noctilucente (pt); كۇمىس ٴتۇستى بۇلتتار (kk-arab); Sudrabainie mākoņi (lv); lysende nattsky (nb); Sidabriškieji debesys (lt); Obłoki srebrzyste (pl); Kümis tüsti bulttar (kk-tr); 夜光云 (zh-sg); noctilucent clood (sco); Күміс түсті бұлттар (kk-cyrl); nattlysande skyer (nn); നോക്റ്റിലൂസന്റ് മേഘങ്ങൾ (ml); Gümüşü buludlar (az); Gece parlayan bulutlar (tr); Kümis tüsti bulttar (kk-latn); Mây dạ quang (vi); Valaisevat yöpilvet (fi); noctilucent cloud (en); غيوم متألقة ليلا (ar); Φωτεινό νέφος (el); كۇمىس ٴتۇستى بۇلتتار (kk-cn) Tipo di nubi (it); hohe Wolken bei 85 km (de); Here you see the highly elevated crystals cloud formation during the twilight of the night (en); úkaz v horní části atmosféry (cs); natuurfenomeen, waarbij de wolken 's-nachts aan de horizon oplichten (nl) Nube mesosferica polar, Nubes mesosféricas polares, Nubes mesosfericas polares (es); Polaarmesosfääripilved, Polaarmesosfääripilv, Polaarsed mesosfääripilved, Polaarne mesosfääripilv, Helkiv ööpilv (et); Nachtleuchtende Wolke, Nachtwolke, Leuchtwolke, Leuchtende Nachtwolken, Leuchtwolken, Noctilucent Cloud, Noctilucent Clouds (de); Mây tầng trung lưu vùng cực (vi); Polārie mezosfēras mākoņi (lv); Sidabriškasis debesis (lt); Nočné svietiace mraky, Nočné svietiace mračná (sk); lysande nattskyer, lysande nattsky (nn); lysende nattskyer (nb); Lichtende nachtwolken (nl); Chmury srebrzyste, Polarne chmury mezosferowe (pl); Срібляста хмара (uk); Nube nottilucente (it); Valaiseva yöpilvi (fi); ابر شب تاب, ابرهای شب‌تاب, ابرهای شب تاب (fa); غيوم متألقة ليلاً (ar); Noctilucent, Polární mezosférický oblak (cs); lysende natskyer, nattlysende skyer (da)

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