#noctilucent — Public Fediverse posts

Anyone else in UK at around 51 degs north seeing this to the north west? It's VERY late for #Noctilucent ckouds but I can't think what else it could be.

Thoughts?

#astrophotography

Anyone else in UK at around 51 degs north seeing this to the north west? It's VERY late for #Noctilucent ckouds but I can't think what else it could be.

Thoughts?

#astrophotography

Anyone else in UK at around 51 degs north seeing this to the north west? It's VERY late for #Noctilucent ckouds but I can't think what else it could be.

Thoughts?

#astrophotography

Anyone else in UK at around 51 degs north seeing this to the north west? It's VERY late for #Noctilucent ckouds but I can't think what else it could be.

Thoughts?

#astrophotography

Anyone else in UK at around 51 degs north seeing this to the north west? It's VERY late for #Noctilucent ckouds but I can't think what else it could be.

Thoughts?

#astrophotography

A stunning display of Noctilucent clouds last night, at around midnight, here in the North East of Scotland #Scotland #Noctilucent

A stunning display of Noctilucent clouds last night, at around midnight, here in the North East of Scotland #Scotland #Noctilucent

A stunning display of Noctilucent clouds last night, at around midnight, here in the North East of Scotland #Scotland #Noctilucent

A stunning display of Noctilucent clouds last night, at around midnight, here in the North East of Scotland #Scotland #Noctilucent

A stunning display of Noctilucent clouds last night, at around midnight, here in the North East of Scotland #Scotland #Noctilucent

This (16th July) morning's NLC display. Quite bright, but in a rapidly-brightening sky. Eventually covered about half the entire sky by 02:45UT. This photo at 02:35UT, seen from Anglesey.

#NLC #noctilucent #cloud #weather #science #atmosphere #climate #astronomy

This (16th July) morning's NLC display. Quite bright, but in a rapidly-brightening sky. Eventually covered about half the entire sky by 02:45UT. This photo at 02:35UT, seen from Anglesey.

#NLC #noctilucent #cloud #weather #science #atmosphere #climate #astronomy

This (16th July) morning's NLC display. Quite bright, but in a rapidly-brightening sky. Eventually covered about half the entire sky by 02:45UT. This photo at 02:35UT, seen from Anglesey.

#NLC #noctilucent #cloud #weather #science #atmosphere #climate #astronomy

This (16th July) morning's NLC display. Quite bright, but in a rapidly-brightening sky. Eventually covered about half the entire sky by 02:45UT. This photo at 02:35UT, seen from Anglesey.

#NLC #noctilucent #cloud #weather #science #atmosphere #climate #astronomy

This (16th July) morning's NLC display. Quite bright, but in a rapidly-brightening sky. Eventually covered about half the entire sky by 02:45UT. This photo at 02:35UT, seen from Anglesey.

#NLC #noctilucent #cloud #weather #science #atmosphere #climate #astronomy

Прокатился ночью, коль не спалось.
Серпик «старой» луны висел на почти безоблачном небе. Ясно прорисовывался пепельным сиянием контур луны.
На горизонте начинают проскальзывать призраки зари.
Над болотом начинает подниматься сплошной пеленой туман: контуры окружающего мира размываются, оставляю после себя лишь едва уловимые тени.
Небольшое светлое облачко,мерцающее ртутным светом, появилось в стороне от луны.
Туман, начал светиться: все окружающее пространство вспыхнуло тем ртутным светом. Здесь и сейчас.
Холм над болотом. И над головой светилось серебряным светом небо. И внизу был разлит туман, стирающий границы между небом и землей.
Началась заниматься заря, разделив пространство красной полосой.
И здесь стою. И вижу. Восторг.
Свет зари стал ярче -- яркость облаков стала меньше. Над головой оставались небольшие светлые клочки, на фоне светлеющего неба и меркнущего пепельного света очертившего контур луны с ярким серпиком.

#СеребристыеОблака #noctilucent #ВремяОблаковИСветлячков

Прокатился ночью, коль не спалось.
Серпик «старой» луны висел на почти безоблачном небе. Ясно прорисовывался пепельным сиянием контур луны.
На горизонте начинают проскальзывать призраки зари.
Над болотом начинает подниматься сплошной пеленой туман: контуры окружающего мира размываются, оставляю после себя лишь едва уловимые тени.
Небольшое светлое облачко,мерцающее ртутным светом, появилось в стороне от луны.
Туман, начал светиться: все окружающее пространство вспыхнуло тем ртутным светом. Здесь и сейчас.
Холм над болотом. И над головой светилось серебряным светом небо. И внизу был разлит туман, стирающий границы между небом и землей.
Началась заниматься заря, разделив пространство красной полосой.
И здесь стою. И вижу. Восторг.
Свет зари стал ярче -- яркость облаков стала меньше. Над головой оставались небольшие светлые клочки, на фоне светлеющего неба и меркнущего пепельного света очертившего контур луны с ярким серпиком.

#СеребристыеОблака #noctilucent #ВремяОблаковИСветлячков

Открыт сезон светлячков и серебристых облаков.

#СеребристыеОблака #noctilucent

Открыт сезон светлячков и серебристых облаков.

#СеребристыеОблака #noctilucent

2026-07-08 NLCs ~ 0235hr ±10mins

Some nice structures and shapes. Particularly pleased with the roll of low cloud/mist along the A85 through Strathearn in the distance.

Your regular reminder that these brilliant electric-blue clouds are increasingly visible due to increasing methane/water vapour/ozone interactions in the upper atmosphere.

#NLC #noctilucent #cloud #night #nightsky #sky #NoctilucenClouds #perthshire #Strathearn #longexposure #photography #nature #climatechange

2026-07-08 NLCs ~ 0235hr ±10mins

Some nice structures and shapes. Particularly pleased with the roll of low cloud/mist along the A85 through Strathearn in the distance.

Your regular reminder that these brilliant electric-blue clouds are increasingly visible due to increasing methane/water vapour/ozone interactions in the upper atmosphere.

#NLC #noctilucent #cloud #night #nightsky #sky #NoctilucenClouds #perthshire #Strathearn #longexposure #photography #nature #climatechange

2026-07-08 NLCs ~ 0235hr ±10mins

Some nice structures and shapes. Particularly pleased with the roll of low cloud/mist along the A85 through Strathearn in the distance.

Your regular reminder that these brilliant electric-blue clouds are increasingly visible due to increasing methane/water vapour/ozone interactions in the upper atmosphere.

#NLC #noctilucent #cloud #night #nightsky #sky #NoctilucenClouds #perthshire #Strathearn #longexposure #photography #nature #climatechange

2026-07-08 NLCs ~ 0235hr ±10mins

Some nice structures and shapes. Particularly pleased with the roll of low cloud/mist along the A85 through Strathearn in the distance.

Your regular reminder that these brilliant electric-blue clouds are increasingly visible due to increasing methane/water vapour/ozone interactions in the upper atmosphere.

#NLC #noctilucent #cloud #night #nightsky #sky #NoctilucenClouds #perthshire #Strathearn #longexposure #photography #nature #climatechange

2026-07-08 NLCs ~ 0235hr ±10mins

Some nice structures and shapes. Particularly pleased with the roll of low cloud/mist along the A85 through Strathearn in the distance.

Your regular reminder that these brilliant electric-blue clouds are increasingly visible due to increasing methane/water vapour/ozone interactions in the upper atmosphere.

#NLC #noctilucent #cloud #night #nightsky #sky #NoctilucenClouds #perthshire #Strathearn #longexposure #photography #nature #climatechange

A decent noctilucent cloud display at 02:00UT this (July 08) morning. As seen from Anglesey. Apparent elevation 35 degrees, spanning about 130 degrees in azimuth. Brightness of 4 (of 5). About a month of the season left now.

#nlc #noctilucent #cloud #science #photography

A decent noctilucent cloud display at 02:00UT this (July 08) morning. As seen from Anglesey. Apparent elevation 35 degrees, spanning about 130 degrees in azimuth. Brightness of 4 (of 5). About a month of the season left now.

#nlc #noctilucent #cloud #science #photography

A decent noctilucent cloud display at 02:00UT this (July 08) morning. As seen from Anglesey. Apparent elevation 35 degrees, spanning about 130 degrees in azimuth. Brightness of 4 (of 5). About a month of the season left now.

#nlc #noctilucent #cloud #science #photography

A decent noctilucent cloud display at 02:00UT this (July 08) morning. As seen from Anglesey. Apparent elevation 35 degrees, spanning about 130 degrees in azimuth. Brightness of 4 (of 5). About a month of the season left now.

#nlc #noctilucent #cloud #science #photography

A decent noctilucent cloud display at 02:00UT this (July 08) morning. As seen from Anglesey. Apparent elevation 35 degrees, spanning about 130 degrees in azimuth. Brightness of 4 (of 5). About a month of the season left now.

#nlc #noctilucent #cloud #science #photography

And that was "Noctilucent Clouds over Bennachie and Donside earlier this morning at around 01:00 in the north east of Scotland" by the Strawberry Moon, also making an appearance Abba Dean, sire ...

#Aberdeenshire
#Scotland #Noctilucent #StrawberryMoon

#JohnPeelBandNames
#StuartMaconieBandNames

And that was "Noctilucent Clouds over Bennachie and Donside earlier this morning at around 01:00 in the north east of Scotland" by the Strawberry Moon, also making an appearance Abba Dean, sire ...

#Aberdeenshire
#Scotland #Noctilucent #StrawberryMoon

#JohnPeelBandNames
#StuartMaconieBandNames

And that was "Noctilucent Clouds over Bennachie and Donside earlier this morning at around 01:00 in the north east of Scotland" by the Strawberry Moon, also making an appearance Abba Dean, sire ...

#Aberdeenshire
#Scotland #Noctilucent #StrawberryMoon

#JohnPeelBandNames
#StuartMaconieBandNames

And that was "Noctilucent Clouds over Bennachie and Donside earlier this morning at around 01:00 in the north east of Scotland" by the Strawberry Moon, also making an appearance Abba Dean, sire ...

#Aberdeenshire
#Scotland #Noctilucent #StrawberryMoon

#JohnPeelBandNames
#StuartMaconieBandNames

And that was "Noctilucent Clouds over Bennachie and Donside earlier this morning at around 01:00 in the north east of Scotland" by the Strawberry Moon, also making an appearance Abba Dean, sire ...

#Aberdeenshire
#Scotland #Noctilucent #StrawberryMoon

#JohnPeelBandNames
#StuartMaconieBandNames

Noctilucent clouds over Bennachie and Donside earlier this morning at around 01:00 in the north east of Scotland. The Strawberry Moon also making an appearance #Aberdeenshire #Scotland #Noctilucent #StrawberryMoon

Noctilucent clouds over Bennachie and Donside earlier this morning at around 01:00 in the north east of Scotland. The Strawberry Moon also making an appearance #Aberdeenshire #Scotland #Noctilucent #StrawberryMoon

Noctilucent clouds over Bennachie and Donside earlier this morning at around 01:00 in the north east of Scotland. The Strawberry Moon also making an appearance #Aberdeenshire #Scotland #Noctilucent #StrawberryMoon

Noctilucent clouds over Bennachie and Donside earlier this morning at around 01:00 in the north east of Scotland. The Strawberry Moon also making an appearance #Aberdeenshire #Scotland #Noctilucent #StrawberryMoon

Noctilucent clouds over Bennachie and Donside earlier this morning at around 01:00 in the north east of Scotland. The Strawberry Moon also making an appearance #Aberdeenshire #Scotland #Noctilucent #StrawberryMoon

Saw a low band of #noctilucent #clouds hugging the northern horizon at around 01.40 this morning. Quite pretty.

Saw a low band of #noctilucent #clouds hugging the northern horizon at around 01.40 this morning. Quite pretty.

Saw a low band of #noctilucent #clouds hugging the northern horizon at around 01.40 this morning. Quite pretty.

Jour 16 du #PhotoMai2026 #PhotoMay2026
Thème : Nuit

Hâte.... plus que quelques semaines à attendre pour espérer voir cette année des nuages noctulescents, noctiluques, brillant dans la nuit.
En 2025, les nuages habituels nous les ont cachés, ici ou alors quand je pense en avoir vus, ils étaient très très loin au nord, juste une bande claire à l'horizon.
Là c'était le 6/07/2022, depuis une crête de #Brasparts : vue sur Roc-Tredudon, le haut de l'antenne, le lac (voir aussi ma photo d'accueil, avec les menhirs d'Eured Vein en 1er plan)

#photography #night #noctilucent #Bretagne #Finistere #noctulescent #noctiluque #nuit

Jour 16 du #PhotoMai2026 #PhotoMay2026
Thème : Nuit

Hâte.... plus que quelques semaines à attendre pour espérer voir cette année des nuages noctulescents, noctiluques, brillant dans la nuit.
En 2025, les nuages habituels nous les ont cachés, ici ou alors quand je pense en avoir vus, ils étaient très très loin au nord, juste une bande claire à l'horizon.
Là c'était le 6/07/2022, depuis une crête de #Brasparts : vue sur Roc-Tredudon, le haut de l'antenne, le lac (voir aussi ma photo d'accueil, avec les menhirs d'Eured Vein en 1er plan)

#photography #night #noctilucent #Bretagne #Finistere #noctulescent #noctiluque #nuit

Jour 16 du #PhotoMai2026 #PhotoMay2026
Thème : Nuit

Hâte.... plus que quelques semaines à attendre pour espérer voir cette année des nuages noctulescents, noctiluques, brillant dans la nuit.
En 2025, les nuages habituels nous les ont cachés, ici ou alors quand je pense en avoir vus, ils étaient très très loin au nord, juste une bande claire à l'horizon.
Là c'était le 6/07/2022, depuis une crête de #Brasparts : vue sur Roc-Tredudon, le haut de l'antenne, le lac (voir aussi ma photo d'accueil, avec les menhirs d'Eured Vein en 1er plan)

#photography #night #noctilucent #Bretagne #Finistere #noctulescent #noctiluque #nuit

Jour 16 du #PhotoMai2026 #PhotoMay2026
Thème : Nuit

Hâte.... plus que quelques semaines à attendre pour espérer voir cette année des nuages noctulescents, noctiluques, brillant dans la nuit.
En 2025, les nuages habituels nous les ont cachés, ici ou alors quand je pense en avoir vus, ils étaient très très loin au nord, juste une bande claire à l'horizon.
Là c'était le 6/07/2022, depuis une crête de #Brasparts : vue sur Roc-Tredudon, le haut de l'antenne, le lac (voir aussi ma photo d'accueil, avec les menhirs d'Eured Vein en 1er plan)

#photography #night #noctilucent #Bretagne #Finistere #noctulescent #noctiluque #nuit

Jour 16 du #PhotoMai2026 #PhotoMay2026
Thème : Nuit

Hâte.... plus que quelques semaines à attendre pour espérer voir cette année des nuages noctulescents, noctiluques, brillant dans la nuit.
En 2025, les nuages habituels nous les ont cachés, ici ou alors quand je pense en avoir vus, ils étaient très très loin au nord, juste une bande claire à l'horizon.
Là c'était le 6/07/2022, depuis une crête de #Brasparts : vue sur Roc-Tredudon, le haut de l'antenne, le lac (voir aussi ma photo d'accueil, avec les menhirs d'Eured Vein en 1er plan)

#photography #night #noctilucent #Bretagne #Finistere #noctulescent #noctiluque #nuit

AGU: Climate change is making night-shining clouds more visible

2 July 2018

WASHINGTON — Increased water vapor in Earth’s atmosphere due to human activities is making shimmering high-altitude clouds more visible, a new study finds. The results suggest these strange but increasingly common clouds seen only on summer nights are an indicator of human-caused climate change, according to the study’s authors.

https://news.agu.org/press-release/climate-change-is-making-night-shining-clouds-more-visible/

#clouds #noctilucent

AGU: Climate change is making night-shining clouds more visible

2 July 2018

WASHINGTON — Increased water vapor in Earth’s atmosphere due to human activities is making shimmering high-altitude clouds more visible, a new study finds. The results suggest these strange but increasingly common clouds seen only on summer nights are an indicator of human-caused climate change, according to the study’s authors.

https://news.agu.org/press-release/climate-change-is-making-night-shining-clouds-more-visible/

#clouds #noctilucent

AGU: Climate change is making night-shining clouds more visible

2 July 2018

WASHINGTON — Increased water vapor in Earth’s atmosphere due to human activities is making shimmering high-altitude clouds more visible, a new study finds. The results suggest these strange but increasingly common clouds seen only on summer nights are an indicator of human-caused climate change, according to the study’s authors.

https://news.agu.org/press-release/climate-change-is-making-night-shining-clouds-more-visible/

#clouds #noctilucent

AGU: Climate change is making night-shining clouds more visible

2 July 2018

WASHINGTON — Increased water vapor in Earth’s atmosphere due to human activities is making shimmering high-altitude clouds more visible, a new study finds. The results suggest these strange but increasingly common clouds seen only on summer nights are an indicator of human-caused climate change, according to the study’s authors.

https://news.agu.org/press-release/climate-change-is-making-night-shining-clouds-more-visible/

#clouds #noctilucent

AGU: Climate change is making night-shining clouds more visible

2 July 2018

WASHINGTON — Increased water vapor in Earth’s atmosphere due to human activities is making shimmering high-altitude clouds more visible, a new study finds. The results suggest these strange but increasingly common clouds seen only on summer nights are an indicator of human-caused climate change, according to the study’s authors.

https://news.agu.org/press-release/climate-change-is-making-night-shining-clouds-more-visible/

#clouds #noctilucent

Noctilucence Even On Mars!

2021 June 5

The Shining Clouds of Mars
* Image Credit: NASA, JPL-Caltech, MSSS
https://www.nasa.gov/
https://www.jpl.nasa.gov/
https://www.msss.com/

Explanation:
The weathered and layered face of Mount Mercou looms in the foreground of this mosaic from the Curiosity Mars rover's Mast Camera. Made up of 21 individual images the scene was recorded just after sunset on March 19, the 3,063rd martian day of Curiosity's on going exploration of the Red Planet. In the martian twilight high altitude clouds still shine above, reflecting the light from the Sun below the local horizon like the noctilucent clouds of planet Earth. Though water ice clouds drift through the thin martian atmosphere, these wispy clouds are also at extreme altitudes and could be composed of frozen carbon dioxide, crystals of dry ice. Curiosity's Mast Cam has also imaged iridescent or mother of pearl clouds adding subtle colors to the martian sky.

https://apod.nasa.gov/apod/ap210605.ht

#space #mars #atmosphere #noctilucent #astrophotography #photography #science #nature #NASA

Noctilucence Even On Mars!

2021 June 5

The Shining Clouds of Mars
* Image Credit: NASA, JPL-Caltech, MSSS
https://www.nasa.gov/
https://www.jpl.nasa.gov/
https://www.msss.com/

Explanation:
The weathered and layered face of Mount Mercou looms in the foreground of this mosaic from the Curiosity Mars rover's Mast Camera. Made up of 21 individual images the scene was recorded just after sunset on March 19, the 3,063rd martian day of Curiosity's on going exploration of the Red Planet. In the martian twilight high altitude clouds still shine above, reflecting the light from the Sun below the local horizon like the noctilucent clouds of planet Earth. Though water ice clouds drift through the thin martian atmosphere, these wispy clouds are also at extreme altitudes and could be composed of frozen carbon dioxide, crystals of dry ice. Curiosity's Mast Cam has also imaged iridescent or mother of pearl clouds adding subtle colors to the martian sky.

https://apod.nasa.gov/apod/ap210605.ht

#space #mars #atmosphere #noctilucent #astrophotography #photography #science #nature #NASA

Noctilucence Even On Mars!

2021 June 5

The Shining Clouds of Mars
* Image Credit: NASA, JPL-Caltech, MSSS
https://www.nasa.gov/
https://www.jpl.nasa.gov/
https://www.msss.com/

Explanation:
The weathered and layered face of Mount Mercou looms in the foreground of this mosaic from the Curiosity Mars rover's Mast Camera. Made up of 21 individual images the scene was recorded just after sunset on March 19, the 3,063rd martian day of Curiosity's on going exploration of the Red Planet. In the martian twilight high altitude clouds still shine above, reflecting the light from the Sun below the local horizon like the noctilucent clouds of planet Earth. Though water ice clouds drift through the thin martian atmosphere, these wispy clouds are also at extreme altitudes and could be composed of frozen carbon dioxide, crystals of dry ice. Curiosity's Mast Cam has also imaged iridescent or mother of pearl clouds adding subtle colors to the martian sky.

https://apod.nasa.gov/apod/ap210605.ht

#space #mars #atmosphere #noctilucent #astrophotography #photography #science #nature #NASA

2016 July 30

Ripples Through a Dark Sky
* Image Credit & Copyright: P-M Hedén (Clear Skies, TWAN)
https://www.clearskies.se/
https://twanight.org/

Explanation:
Sunlight ripples through a dark sky on this Swedish summer midnight as noctilucent or night shining clouds seem to imitate the river below. In fact, the seasonal clouds often appear at high latitudes in corresponding summer months. Also known as polar mesospheric clouds, they form as water vapor is driven into the cold upper atmosphere. Fine dust supplied by disintegrating meteors or volcanic ash provides sites where water vapor can condense, turning to ice at the cold temperatures in the mesosphere. Poised at the edge of space some 80 kilometers above, these icy clouds really do reflect sunlight toward the ground. They are visible here even though the Sun itself was below the horizon, as seen on July 16 from Sweden's Färnebofjärdens National Park.

https://apod.nasa.gov/apod/ap160730.html

#space #earth #atmosphere #noctilucent #astrophotography #photography #science #nature #NASA

2016 July 30

Ripples Through a Dark Sky
* Image Credit & Copyright: P-M Hedén (Clear Skies, TWAN)
https://www.clearskies.se/
https://twanight.org/

Explanation:
Sunlight ripples through a dark sky on this Swedish summer midnight as noctilucent or night shining clouds seem to imitate the river below. In fact, the seasonal clouds often appear at high latitudes in corresponding summer months. Also known as polar mesospheric clouds, they form as water vapor is driven into the cold upper atmosphere. Fine dust supplied by disintegrating meteors or volcanic ash provides sites where water vapor can condense, turning to ice at the cold temperatures in the mesosphere. Poised at the edge of space some 80 kilometers above, these icy clouds really do reflect sunlight toward the ground. They are visible here even though the Sun itself was below the horizon, as seen on July 16 from Sweden's Färnebofjärdens National Park.

https://apod.nasa.gov/apod/ap160730.html

#space #earth #atmosphere #noctilucent #astrophotography #photography #science #nature #NASA

2016 July 30

Ripples Through a Dark Sky
* Image Credit & Copyright: P-M Hedén (Clear Skies, TWAN)
https://www.clearskies.se/
https://twanight.org/

Explanation:
Sunlight ripples through a dark sky on this Swedish summer midnight as noctilucent or night shining clouds seem to imitate the river below. In fact, the seasonal clouds often appear at high latitudes in corresponding summer months. Also known as polar mesospheric clouds, they form as water vapor is driven into the cold upper atmosphere. Fine dust supplied by disintegrating meteors or volcanic ash provides sites where water vapor can condense, turning to ice at the cold temperatures in the mesosphere. Poised at the edge of space some 80 kilometers above, these icy clouds really do reflect sunlight toward the ground. They are visible here even though the Sun itself was below the horizon, as seen on July 16 from Sweden's Färnebofjärdens National Park.

https://apod.nasa.gov/apod/ap160730.html

#space #earth #atmosphere #noctilucent #astrophotography #photography #science #nature #NASA

2016 July 30

Ripples Through a Dark Sky
* Image Credit & Copyright: P-M Hedén (Clear Skies, TWAN)
https://www.clearskies.se/
https://twanight.org/

Explanation:
Sunlight ripples through a dark sky on this Swedish summer midnight as noctilucent or night shining clouds seem to imitate the river below. In fact, the seasonal clouds often appear at high latitudes in corresponding summer months. Also known as polar mesospheric clouds, they form as water vapor is driven into the cold upper atmosphere. Fine dust supplied by disintegrating meteors or volcanic ash provides sites where water vapor can condense, turning to ice at the cold temperatures in the mesosphere. Poised at the edge of space some 80 kilometers above, these icy clouds really do reflect sunlight toward the ground. They are visible here even though the Sun itself was below the horizon, as seen on July 16 from Sweden's Färnebofjärdens National Park.

https://apod.nasa.gov/apod/ap160730.html

#space #earth #atmosphere #noctilucent #astrophotography #photography #science #nature #NASA

2016 July 30

Ripples Through a Dark Sky
* Image Credit & Copyright: P-M Hedén (Clear Skies, TWAN)
https://www.clearskies.se/
https://twanight.org/

Explanation:
Sunlight ripples through a dark sky on this Swedish summer midnight as noctilucent or night shining clouds seem to imitate the river below. In fact, the seasonal clouds often appear at high latitudes in corresponding summer months. Also known as polar mesospheric clouds, they form as water vapor is driven into the cold upper atmosphere. Fine dust supplied by disintegrating meteors or volcanic ash provides sites where water vapor can condense, turning to ice at the cold temperatures in the mesosphere. Poised at the edge of space some 80 kilometers above, these icy clouds really do reflect sunlight toward the ground. They are visible here even though the Sun itself was below the horizon, as seen on July 16 from Sweden's Färnebofjärdens National Park.

https://apod.nasa.gov/apod/ap160730.html

#space #earth #atmosphere #noctilucent #astrophotography #photography #science #nature #NASA