Dar Tantora The House Hotel, a renovated original mudbrick village in the oasis of AlUla, Medina Province, Saudi Arabia

Jabal Alfil (Elephant Rock) by night, a natural red sandstone formation in the area of AlUla, Medina Province, Saudi Arabia

The Aurora Borealis, the spectacular Northern Lights turn the sky green and purple above Kvaloya island at Tromso in the Arctic Circle in Northern Norway

Aurora Borealis spectacular Northern Lights green and purple curtain effect and Venus star at Grotfjord, Kvaloya island, Tromso, Arctic Circle, Northern Norway

The Aurora Borealis, the spectacular Northern Lights fill the sky with dazzling green light above Kvaloya island at Tromso in the Arctic Circle in Northern Norway

Aurora Borealis spectacular Northern Lights green and purple curtain effect and Venus star at Grotfjord, Kvaloya island, Tromso, Arctic Circle, Northern Norway

The Aurora Borealis, the spectacular Northern Lights fill the sky with dazzling green light above Kvaloya island at Tromso in the Arctic Circle in Northern Norway

The Aurora Borealis, the spectacular Northern Lights fill the sky with dazzling green light above Kvaloya island at Tromso in the Arctic Circle in Northern Norway

The Aurora Borealis spectacular Northern Lights and Venus star at Grotfjord, Kvaloya island, Tromso in the Arctic Circle, Northern Norway

Aurora Borealis spectacular Northern Lights green and purple curtain effect and Venus star at Grotfjord, Kvaloya island, Tromso, Arctic Circle, Northern Norway

The Milky Way and two tracks of satellites on a starlit sky in winter, weak northern lights, aurora borealis on the lower sky, Longyearbyen, Spitsbergen, Svalbard, Norway, Europe

Milky Way above Halema'uma'u crater eruption, Kilauea volcano, Hawai'i Volcanoes National Park, Big Island of Hawai'i, USA, North America

Blue iceberg in Aurora Borealis, Jökulsárlón, Hornafjörður, Austurland, Iceland, Europe

Illuminated Kastenbockwindmühle, historical windmill, with starry sky, Tönisberg, Kempen, Lower Rhine, North Rhine-Westphalia, Germany, Europe