Monday, July 25 2022 – 12:05 WIB
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LIVE Techno – One of the fundamental questions that can be asked of astronauts is, is it possible to see man-made objects from outside the atmosphere earth?
To answer that question, we need to determine where Earth’s atmosphere ends and outer space started. This area is called the Kármán Line, which is considered the boundary between Earth and space and is located at 100 kilometers (62 mi) above the earth’s surface.
In fact, there are a number of man-made places that can be seen from space, quoting from the site SpaceMonday, July 25, 2022.
For example, the Bingham Gorge mine, located about 20 miles (32 km) southeast of Salt Lake City, is the largest man-made excavation site ever and also the world’s deepest “open pit” mine.
The mine is so large that it is not only visible from the Kármán line, but is also reportedly visible to astronauts on NASA’s space shuttle, orbiting at an altitude of between 190 and 330 miles (305 to 531 km) above sea level.
Second, the Three Gorges dam, which runs along the Yangtze River in China. The dam is the largest electricity generating facility in the world and is considered the most expensive hydroelectric dam ever built.
Also in attendance, Dubai’s Palm Jumeirah, which can also be seen from the Kármán line. In addition, using an 800 mm (31 inch) lens, the artificial islands can also be clearly seen from the International Space Station (ISS), which orbits at an average altitude of about 250 miles (400 km) above sea level.
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