What are the natural landscapes that can be seen with the naked eye in space?

10。The Grand Canyon is a magnificent natural landscape.

The world-famous Grand Canyon is known as a "living geological history textbook", and it is the only natural landscape on Earth that can be observed with the naked eye from space. Standing in front of its great and solemn chasm, man seems so small that no words can describe its grandeur and magnificence.

In the past, people said it was visible.

Great Wall. You can't actually see it, the Great Wall is long, but it's very narrow, and if you think about it, the earth is only that big, how wide can the Great Wall be? How many meters? It's not visible from that far in space

Yang Liwei, the first person in China's space, accepted an interview with ** after successfully returning to the ground, and a reporter asked curiously: "Have you seen the Great Wall in space?" Yang Liwei said without thinking

No. So can you really see the Great Wall in space? Theoretically, this is absolutely impossible.

Because the Great Wall is narrow and irregular, and it is difficult to observe irregularities in space; Not only that, but the average width of the Great Wall is less than 10 meters, and it is easy to be hidden by the surrounding terrain, so it is difficult to distinguish it at a height of 20 kilometers with the naked eye alone, and the height at which the Great Wall completely disappears from the human eye is only 60 kilometers. This is too much compared to the average orbital altitude of 400 kilometers for spacecraft. If you can see the Great Wall from the moon, it is like looking at a strand of hair from 2,688 meters away.

If astronauts can see the Great Wall, it is obviously not real. From a practical point of view, since this statement has been circulated, many astronauts who have been in space have been correcting it, saying that there is absolutely no such thing. Aldrin, one of the first two astronauts to land on the moon——— emphasized in an interview with Hong Kong's Phoenix Satellite TV:

That's a misunderstanding, it's caused by people's ignorance of the facts. And the first space tourist, the billionaire Tito, also denied this claim.

It is said that I can't see it

Milky Way, Milky Way Cluster, Planets, Stars, Meteorites, Black Patch, Sun.

Milky Way, Earth, Moon, Sun.

The natural landscape certainly does not include the Great Wall, it should be the "ocean".

Blue planet.

What can be seen in space can be described in space, or you can describe the scene on Earth in space.

1. The Himalayas.

The world's tallest mountain can also be seen from space. The highest mountain range separates the Indian subcontinent from the Tibetan Plateau, where Mount Everest, the highest mountain in the world. The Himalayas include hundreds of mountains that rise above 7,200 meters above sea level.

Many areas of this mountain range are also sacred in Hinduism and Buddhism.

2. Amazon River.

The 4,000-mile-long Amazon River and its tributaries can also be seen from space. This photo** was taken by an ISS crew member in 2006. In this case, it forms a long network, like a line that can be seen from space.

In space images of the Amazon River, the color of the water appears to be very dark due to the soil of the lowland forest.

3. Ganges Delta.

The Ganges Servic Delta is the largest delta-forming area in the world and can be found in the Bay of Bengal, parts of Bangladesh, and the Bay of West Bengal in India. It covers an area of 220 miles, and this amazing geographical feature can also be seen from the Earth's orbit. When the river is empty, it is possible to see a large amount of sediment in this area.

Witch Head Nebula. What do you see when you look at this image through the Hubble Space Telescope? If you look closely, you may see the head of a witch wearing a hat, a pointed chin, and a nose.

In mid-2015, NASA shared images of this creepy witch's head nebula.

Fish bones on Mars. Space enthusiasts love to look for unusual shapes in the rocks of Mars. In 2016, NASA's Curiosity probe captured this and found the shape of a fishbone in a spiral rock formation, which is an interesting coincidence, although this is not true.

In October 2014, the National Aeronautics and Space Administration (NASA) took an image of the sun that looked like a "jack's lamp." When this ** was released, there was no Halloween in the United States, but the sun seemed to be put on early.

In 2017, NASA's Juno spacecraft took a rotating image of two eyes and a mouth. Jason Major, who is working on this **, named it Jovey MC Jupiter face.

Spoon on Mars. Someone must be hungry on Mars, and a sharp-eyed UFO enthusiast spotted this unusual **. In 2016, NASA's Curiosity rover captured this** and it looked like someone had put a spoon on Mars.

We can see the sun every day, and sunspots are usually invisible when we can't see with the naked eye. Because the limit of naked-eye resolution may be an angle, the angular diameter of the sun's altitude angle is about 30 minutes, that is, if you want to see the naked-eye attraction, the diameter of the spot should be at least one-thirtieth of the sun's diameter.

Typically, space scenarios are natural man-made phenomena that occur outside the Earth's atmosphere. Unfortunately, meteor showers and aurora can't participate in the event, although the effects of the two are inconsistent.

Sunspot. I won't tell you my latitude and longitude. We see sunspots every day, and we can't see sunspots with bare eyes.

Because the limit of naked-eye resolution may be an angle, the angular diameter of the sun's altitude angle is about 30 minutes, that is, if you want to see the naked-eye attraction, the diameter of the spot should be at least one-thirtieth of the sun's diameter.

Transit of Venus. The principle of a transit of Venus is similar to that of a solar eclipse, except that Venus is farther away from the Earth, making it impossible for Venus to completely block the Sun. In fact, Venus can only block a small part of the Sun, and the effect is somewhat similar to the large sunspots above.

Sputnik. Visual inspection is the only man-made space sight on the list. Artificial satellites do not emit light on their own, and generally rely on solar panels or certain parts of the satellite to reflect sunlight.

When the sun, the satellite, and the observer are at a certain angle, the sunlight will be reflected to the observer's eye through the satellite's solar panels, and at this time, we can see the artificial satellite. Because satellites orbit the Earth, this angle is fleeting, so the (maximum brightness) of artificial satellites usually shines for a short period of time, from a few seconds to a minute or two, so we usually see artificial satellites.

In addition to this, he said that it can be directly observed with the naked eye, so it is impossible for many galaxy clusters to appear. The following is mainly a consideration of the spatial scene, which may be subjective and ...... if not satisfied

By default, the space scene is a natural and man-made phenomenon that occurs outside the Earth's atmosphere (bounded by the Kármán line), and the meteor showers and auroras that you are familiar with happen just around this boundary.

First of all, one of the purpose of constellations, especially modern constellations, is to allow celestial bodies to have a more intuitive and grounded way of representing their orientation outside the celestial coordinate system, somewhat similar to a geographical administrative region.