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Cheomseongdae, oldest astronomical observatory in east Asia, Gyeongju, UNESCO World Heritage Site, South Korea, Asia

Cheomseongdae Astronomical Observation Tower, Royal Tombs burial mounds, UNESCO World Heritage Site, Gyeongju, Gyeongsangbuk-do, South Korea, Asia

Glowing active volcanic crater of Volcan Telica on a starry night, with the Milky Way, Orion and the Pleiades, Leon, Nicaragua, Central America

The green light of the Northern Lights (aurora borealis) lights up fishermans cabins, Hamnoy, Lofoten Islands, Arctic, Norway, Scandinavia, Europe

Northern Lights (aurora borealis) and mountains reflected in the cold waters, Skagsanden, Lofoten Islands, Arctic, Norway, Scandinavia, Europe

Northern Lights (aurora borealis) illuminate Hamnoy village and snowy peaks, Lofoten Islands, Arctic, Norway, Scandinavia, Europe

Majestic night sky with Milky Way over a serene mountain landscape in the Teide National Park, UNESCO World Heritage Site, Tenerife, Canary Islands, Spain, Atlantic, Europe

Starry night sky over majestic mountain landscape with Milky Way visible and rocky terrain in the foreground, Teide National Park, UNESCO World Heritage Site, Tenerife, Canary Islands, Spain, Atlantic, Europe

El Caracol (the Snail), Observatory, Chichen Itza, UNESCO World Heritage Site, Yucatan, Mexico, North America

Large heliostat EuroDish solar energy scientific research centre, Tabernas, Almeria, Andalusia, Spain, Europe

The Very Large Array (The National Radio Astronomy Observatory), multiple antennas, New Mexico, United States of America, North America

The Very Large Array (The National Radio Astronomy Observatory), a single antenna, New Mexico, United States of America, North America

The Very Large Array (The National Radio Astronomy Observatory), multiple antennas, New Mexico, United States of America, North America

Spain's Gran Telescopio Canarias, Roque de los Muchachos Observatory, La Palma Island, Canary Islands, Spain, Europe

Astronomical Observatory, Napali coast, Kokee State Park, Kauai Island, Hawaii, United States of America, North America

Aerial view of Telescope observatory, near Caldera de Taburiente National Park, UNESCO Biosphere Site, La Palma, Canary Islands, Spain, Atlantic, Europe

Aerial view of Telescope observatory, near Caldera de Taburiente National Park, UNESCO Biosphere Site, La Palma, Canary Islands, Spain, Atlantic, Europe

Glowing active volcanic crater of Volcan Telica at night with star trails and shooting star (meteor) on right, Leon, Nicaragua, Central America

Night time in the Rose Valley showing the unusual rock formations and desert landscape light painted, Cappadocia, Anatolia, Turkey, Asia Minor, Eurasia

Night time in the Rose Valley showing the rock formations and desert landscape light painted with torches, Cappadocia, Anatolia, Turkey, Asia Minor, Eurasia

Northern Lights (aurora borealis) illuminate the sky and the snowy peaks, Flakstad, Lofoten Islands, Arctic, Norway, Scandinavia, Europe

The Northern Lights (aurora borealis) light up the sky and the beach of the cold sea of Gymsoyand (Gimsoy), Lofoten Islands, Arctic, Norway, Scandinavia, Europe

Northern Lights (aurora borealis) illuminate the sky and the snowy peaks, Flakstad, Lofoten Islands, Arctic, Norway, Scandinavia, Europe

Tien Shan Astronomical Observatory, Ile-Alatau National Park, Assy Plateau, Almaty, Kazakhstan, Central Asia, Asia

Tien Shan Astronomical Observatory, Ile-Alatau National Park, Assy Plateau, Almaty, Kazakhstan, Central Asia, Asia

Supermoon (perigree full moon) bigger and brighter in the winter evening sky, United Kingdom, Europe

Lunar eclipse, a rare supermoon, blood moon composite phase in the night sky, United Kingdom, Europe

Aurora (Northern Lights) reflected in Lower Kananaskis Lake, Peter Laugheed Provincial Park, Alberta, Canada, North America

Aurora (Northern Lights) reflected in Lower Kananaskis Lake, Peter Laugheed Provincial Park, Alberta, Canada, North America

Parabolic discs at the solar energy scientific research centre, Tabernas, Almeria, Andalusia, Spain, Europe

Northern Lights (aurora borealis) on Skagsanden sky, Lofoten Islands, Arctic, Norway, Scandinavia, Europe

The Very Large Array (The National Radio Astronomy Observatory), multiple antennas, New Mexico, United States of America, North America

Starry night sky over a volcanic landscape with a colorful twilight gradient in Tenerife, Canary Islands, Spain, Atlantic, Europe

Star trails above The Kasbah Ait-Benhaddou, UNESCO World Heritage Site, Morocco, North Africa, Africa

Telescope observatory, Caldera de Taburiente National Park, UNESCO Biosphere Site, La Palma, Canary Islands, Spain, Atlantic, Europe

Parabolic discs at the solar energy scientific research centre, Tabernas, Almeria, Andalusia, Spain, Europe

Hiker outside a tent looks at the Northern Lights (Aurora Borealis), Abisko, Kiruna Municipality, Norrbotten County, Lapland, Sweden, Scandinavia, Europe

Astrophysic observatory, the most important in Europe, situated near Roque de los Muchachos, La Palma, Canary Islands, Spain, Europe

Cheomseongdae, oldest astronomical observatory in east Asia, Gyeongju, UNESCO World Heritage Site, South Korea, Asia

VLA (Very Large Array) of the National Radio Astronomy Observatory, New Mexico, United States of America, North America

Snow covered trees and mountain ridge with star filled night sky and Northern Lights (Aurora Borealis), Gerdi Farm, Iceland, Polar Regions

Northern Lights (aurora borealis) over an abandoned log cabin surrounded by snow and ice, Flakstad, Lofoten Islands, Arctic, Northern Norway, Norway, Scandinavia, Europe

VLA (Very Large Array) of the National Radio Astronomy Observatory, New Mexico, United States of America, North America

Northern Lights (aurora borealis) reflected in the cold waters, Flakstad, Lofoten Islands, Arctic, Norway, Scandinavia, Europe

Nearside half moon showing the following Maria, Crisium, Fecunditatis, Tranquilitatis and Serenitatis, seen over Nosara, Costa Rica, Central America

Aerial view of Telescope observatory, near Caldera de Taburiente National Park, UNESCO Biosphere Site, La Palma, Canary Islands, Spain, Atlantic, Europe

Hikers outside tent look at the Northern Lights (Aurora Borealis), Abisko, Kiruna Municipality, Norrbotten County, Lapland, Sweden, Scandinavia, Europe

Northern Lights (aurora borealis) and mountains reflected in the cold waters, Skagsanden, Lofoten Islands, Arctic, Norway, Scandinavia, Europe

Northern Lights (aurora borealis) over a small wooden house. Flakstad, Lofoten Islands, Arctic, Norway, Scandinavia, Europe

Northern Lights (aurora borealis) over an abandoned log cabin surrounded by snow, Flakstad, Lofoten Islands, Arctic, Norway, Scandinavia, Europe

Night time in the Rose Valley showing the rock formations and desert landscape light painted with torches, Cappadocia, Anatolia, Turkey, Asia Minor, Eurasia

The Milky Way and night sky over Gwenfaens Pillar, Porth Saint, near Rhoscolyn, Anglesey, North Wales, United Kingdom, Europe

Northern Lights (aurora borealis) on Skagsanden sky, Lofoten Islands, Arctic, Norway, Scandinavia, Europe

Star trails above The Kasbah Ait-Ben Haddou, UNESCO World Heritage Site, Morocco, North Africa, Africa

The 18th century observatory, Jantar Mantar, built by Jai Singh II in Jaipur, Rajasthan, India, Asia

Double rainbow arching over the Jodrell Bank Lovell Radio Telescope, near Goostrey, Cheshire, England, United Kingdom, Europe

Telescope observatory, Caldera de Taburiente National Park, UNESCO Biosphere Site, La Palma, Canary Islands, Spain, Atlantic, Europe

Northern Lights (aurora borealis) reflected in the cold waters, Flakstad, Lofoten Islands, Arctic, Norway, Scandinavia, Europe

Northern Lights (aurora borealis) on Skagsanden sky, Lofoten Islands, Arctic, Norway, Scandinavia, Europe

Northern Lights (aurora borealis) on Gymsoyan sky, Gimsoy, Lofoten Islands, Arctic, Norway, Scandinavia, Europe

Star trails and night sky over Bwa Gwyn or the White Arch, near Rhoscolyn, Anglesey, North Wales, United Kingdom, Europe