Astronaut Alex Gerst captured from ISS the Moon over Earth. The main part of Earth’s atmosphere is due to stratosphere which extends to 50km. From the image atmosphere looks thick but it only accounts for 0.8% of the Earth’s radius 6,371km.
Astronaut Ricky Arnold captured from ISS Uyuni Salt Lake (Salar de Uyuni), Bolivia.
Occupying over 10,000km2, the vast Salar de Uyuni lies at the southern end of the Altiplano, a high plain of inland drainage in the central Andes. On the whole, the Salar de Uyuni is very flat, with a surface elevation variation of less than 1m. The Salar serves as the major transport route across the Bolivian Altiplano and is a major breeding ground for several species of flamingos. From the image it is clear that the lake is located at 3700m in the Andes Mountains.
The local scenery on the ground is as follows.
Astronaut Alex Gerst captured from ISS Bohai Bay Port of Tianjin, China.
Tianjin is a coastal metropolis in northern China and one of the four national central cities of the country with over 15 million population. Nowadays Tianjin is a dual-core city, with its main urban area located along the Hai River, which connects to the Yellow and Yangtze Rivers via the Grand Canal; and Binhai, a New Area urban core located east of the old city, on the coast of the Bohai Gulf.