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Spectre 1116, light travels fastest in a vacuum!
I haven't seen a spacewalk**, but I speculate that when shooting, I can see that the astronauts should have sunlight, because there is no atmosphere in space, the contrast between light and dark is very high, and other stars that are relatively faint cannot be seen under the direct sunlight.
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spectre1116 ..So why does sunlight reach the earth?
Yes, but it's the same as it looks on Earth, or it's even more unclear (the sunlight background is too strong).
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The reason why we humans can "see" is because there is a medium (dust, some fine particles) and the universe is a vacuum, without which light cannot travel.
So can't be seen.
In short, it is because the propagation of light requires a medium and no stars are seen in the universe.
First of all, I did not deny that light energy travels in a vacuum.
Light would have traveled in a vacuum.
It's just that in the universe, the astronauts see that it's dark.
Light is traveling, but how can it reach the eye without a medium?
It's as if we can see a lot of floating dust in the light.
If it's me wrong.
Of course I'm willing to make corrections.
Study. If you still can't come up with a conclusion.
And then through other ways.
I'll figure it out.
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Who said light can't travel in a vacuum??? Ignorance !!
It should be able to be "seen", but it must have been a long, long time ago, and it's hard to say whether there are any stars or not.
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The vast majority of the stars that can be seen are stars.
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The moon is also only, Neil Alden Armstrong and Buzz Aldrin.
But there are some conspiracy theories and negative news that the two men did not go to the moon.
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Only the Moon. If the earth doesn't count.
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The barrier is a vacuum environment, and there is no background light pollution on the ground, looking at the stars with the naked eye, the stars can not only see more and darker stars, but all the stars will not "blink".
But through a camera lens, a spaceship porthole, or a spacesuit.
If there is a brighter object in the lens or field of view, such as part of a spaceship, or with the Earth or the moon as the background, it is likely that you will not be able to see the stars, at least not many.
First, in order to protect the eyes of astronauts, portholes and helmet masks will filter out or reflect most of the incident light, and if the incident light is weak, there will be fewer or even no stars.
The second is that the bright part of the lens or field of view will obscure the light in the darker part, just like shooting backlight**, sometimes the darker part is black and nothing can be distinguished.
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The Earth seen by astronauts from space is very round, and the blue crystal color is beautiful.
The first to propose the theory that the earth is circular was BC.
Ancient Greece in the 5th and 6th centuries.
the philosopher Pythagoras, because he believed that the sphere was the most perfect of all geometric forms, and was not derived from any objective fact;
The first to make a scientific argument was made by the ancient Greek philosopher, Plato.
A student of Aristotle.
He gave the first scientific evidence that the Earth was spherical based on the fact that the Earth's shadow appeared on the surface of the Moon at the time of the lunar eclipse was circular;
The first to calculate the circumference of the Earth based on the rays of the sun shining at noon and the distance between the two observation sites was the ancient Greek astronomer Eratosthenes in the third century AD;
The first astronomers of the Tang Dynasty in China to calculate the length of the earth's meridian and the circumference of the earth by using the height of the North Pole and the length of the summer day presided over the national astronomical geodetic survey in 726 AD;
The first to prove with practical actions that the earth is indeed spherical was Portugal.
the circumnavigation of the world led by Magellan the Navigator in 1622;
The first person to think that the Earth should be a slightly uplifted spheroid with a slightly uplifted equator and slightly flattened poles was the scientist Isaac Newton.
At the end of the 17th century, Newton studied the influence of the earth's rotation on the shape of the earth, and believed that the earth should be an ellipsoid with a slightly uplifted equator and slightly flattened poles.
The first to prove Newton's conclusion was in 1733 when the Paris Observatory sent two expeditions to Peru at 2° south latitude.
and Lapulin at 66° north latitude for geodetic surveys, which confirmed Newton's conjecture.
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Astronauts can also see stars in space, but the stars are relatively large. The sun is also very bright, because the astronauts are very close to the sun, so they will feel the temperature of the sun.
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You can see the stars, and you can see them very clearly, you can see the outlines of the stars. Of course, the sun is bright, but the sunlight is so dazzling that you can't look at it directly.
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Astronauts can see the stars in space. The stars are a little closer to the astronauts. The sun seen by the astronauts was bright, and the sun's light was particularly dazzling.
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It is possible to see the stars, the sun to see is bright, and astronauts in space can observe various situations around the universe.
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The sight that astronauts see in space is very unique and spectacular. Here are some of the things that might pop up on their horizons:
1.Earth: From the perspective of the space probe, the whole Earth looks like a beautiful blue sphere. Astronauts can see the Earth's atmosphere, the dividing line between clouds and land, and can enjoy the sights of sunrise and sunset.
2.Stars and stars: On Earth, we are often disturbed by urban light pollution, and it is difficult to see the stars in the sky clearly, but in space we don't have to worry about it. Astronauts can see countless dense stars, including the Milky Way and other galaxies in the distance.
3.The Moon: Although the Moon has had many encounters with humans, the view of the Moon from the space station can still be a shocking experience. Astronauts were able to see craters, mountains and deep canyons on the moon.
4.Space Spacecraft and Satellites: Astronauts will also be able to see their own spacecraft, as well as other satellites and space probes that are on various missions.
In conclusion, the sights in space give astronauts a unique and wonderful sense of the universe, which is one of the reasons why space exploration is so fascinating.
If an astronaut accidentally falls into the depths of the universe, he will die a very tragic death. Because we all know that there is no oxygen in the universe, and it is still in a vacuum environment, and the pressure is very high. Astronauts will die from lack of oxygen and finally **.
Put food in a container like a toothpaste. Squeeze it out and eat it... If you eat like the earth. Things are flying everywhere.
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Not really, there are no rules. There is more than one woman on the International Space Station, and in my country, astronaut Liu Yang has taken a spacecraft into space twice.