Jakarta, CNBC Indonesia There are many such buildings on Earth that astronauts can see directly from space. In fact, some can be seen without the aid of a lens, or only with the naked eye.
But first equate to the definition of Earth’s atmosphere and space begins. Namely through the Karman line, named after the physicist Theodor von Karmann, which is considered the boundary between the ends of the Earth and outer space. Space notes that the definition of the Line of Karman is 100 kilometers above the Earth’s surface.
Uniquely, the Great Wall of China, often said to be visible from space, is so long that it is not included in the structure that astronauts can see from outside the atmosphere.
Former ISS Commander Chris Hadfield confirmed this and said he tweeted The buildings “follow a very narrow + natural contours and colors” geography.
Earth’s structure as seen from space
So what can be seen from that distance? Here is the list quoted on Monday (25/7/2022):
1. Bingham Canyon Mine
The mine site is approximately 32 km southeast of Salt Lake City. The mine is so large that it can be seen not only from the unaided Karman Line but also from a NASA spacecraft flying between 305-531 km above sea level.
2. Three Gorges Dam
This dam spread on China’s Yangtze River has been revealed by NASA as visible from space. It is 185 meters high and over 2 km long, says report France 24,
The dam is the largest power generation facility in the world. The Three Gorges Dam is said to be the costliest hydroelectric dam ever built.
3. Palm Jumeirah Dubai
Photo: Villa on the central vein of Jumeirah Palm Island in Dubai, United Arab Emirates, as seen from the observation deck of The View at the Palm Jumeirah (6/4/2021). ( Associated Press photo/Kamran Zebrelli)
NASA claims that the stretch of the artificial island can be seen from the Karman Line. Even the astronauts of the International Space Station (ISS) can see clearly using an 800 mm lens.
For information, let us tell you that the ISS orbits at an average altitude of 400 km above sea level.
4. Roads in Barren Areas
Hadfield said some highways can be seen directly from space. Especially those who move through barren areas like deserts and are dependent on conditions and light.
5. Dark Pyramid
Photo: Egyptian pyramids lit up with lights thanking medical workers fighting the coronavirus ( Associated Press/Nariman al-Mofty)
Especially about the Pyramids of Giza, there is a debate about whether it can be seen from space or not. British astronaut Tim Peake said he could not but see the massive structure clearly through an 800 mm lens.
Meanwhile, former NASA astronaut and ISS commander Leroy Chiao said he could see the pyramids in orbit. “There is so much to see from the ISS, even with the naked eye,” he said.
“For example, once found a large pyramid with telephoto and could select two large pyramids with the naked eye, as long as the lighting and weather conditions are good, as the two smaller points”.