Why can you see the stars on the ground, but not in space?

It's too much to take for granted, astronauts who have been to space haven't said that. It is true that stars are rarely seen in the background of the ** in space, but that is not in itself intended to photograph the stars, and the reflection of close objects obscures the faint light of distant stars.

Everyone knows the Hubble telescope, but the specific principle is less known, Hubble is an optical telescope, it needs light to take a variety of images, space images are not like mobile phones on the earth to take pictures, because the distance between the cosmic celestial bodies is very far, strong light is already very weak when it reaches the vicinity of the earth, Hubble telescope also needs to go through a long time when shooting cosmic images, in order to form a high-resolution image. A random search for an image taken by the Hubble telescope on the Internet can see a large number of stars, but there are few stars in the background of the most common Earth orbiting vehicles and astronauts, because they don't want to photograph stars.

Due to the existence of the atmosphere on the earth, it can refract and scatter distant starlight, so that there can be a little halo around the stars, and the Milky Way can be seen more clearly in places with good meteorological conditions. Because there is no atmosphere in space, it is more permeable to light in principle, which is more conducive to seeing distant celestial bodies, Haber.

The telescope was launched into space with this factor in mind, plus there is no atmosphere in space, and there is no dispersion of light.

The background of space is relatively dark, and the black is just not specially photographed, and the high transparency of space to light makes it very convenient to observe the starry sky.

There is still a difference between the human eye and the camera and other shooting equipment, and the starry sky in the eyes of astronauts can only be felt by themselves, although the vast majority of people cannot fly into space, but they can also feel a little bit of the beauty of the starry sky in the astronauts' descriptions and the images they bring back.

Mars rover in the United States.

The images of the night sky on Mars that were once sent back can also be seen with a little starlight. In fact, this question is easy to understand, in a strong light environment, the light source is relatively clear when shooting with backlight, but the surrounding objects will be black and mushy, that is, the strong light source covers the weak reflection of the object.

Because there is an atmosphere on the earth, there are optical phenomena, and there is no atmosphere in space, so you can see the starry sky on the ground, but you can't see it in space.

There is no sunlight in space, it is difficult for us to see the moon and stars, the reason why we can see on the earth is because there is a lot of atmosphere on the earth, which can refract and scatter the starlight in the distance, which makes it a little halo around the stars, when the meteorological conditions are very good, we can observe very clearly, there is no atmospheric barrier in space, the projection of sunlight is higher, and it is more conducive to seeing the celestial bodies farther away, but there is no atmosphere in space, so the light will not be scattered, and it is dark in space.

The starry sky seen on the ground is mainly due to the sunlight shining on the earth, and the light on the earth is reflected, and the meteorites appear bright on those meteorites, which can be seen on the earth, but in space, the reflection of these lights cannot be observed due to the surrounding environmental problems.

Because the universe is an illusory holographic projection system!! It's just that the global ** is hiding this truth.

Because 79% of the Earth's surface is oceans and 21% is land. And the sea water is blue, and we see only a small part of it on the land of the earth, so it is not as blue as it stands out from space.

On Earth, you can't see space during the day, but you can see space at night. During the day, the atmosphere scatters sunlight and makes it impossible to see the darkness of space.

Mars and Venus both have atmospheres. The atmosphere of Mars is completely different from the composition of the Earth's atmosphere, making it unsuitable for life. If you live there, you must have oxygen**.

The Sun, Earth, Moon, Jupiter, Mars, etc., can be seen in space.

1. The sun. The sun is the central body of the solar system and occupies the overall mass of the solar system. The eight planets in the solar system, asteroids, meteors, comets, outer Neptune objects, and interstellar dust all revolve around the Sun, which revolves around the center of the Milky Way.

2. Earth. Earth is the third planet in the solar system from the inside and outside, and it is also the terrestrial planet with the largest diameter, mass and density in the solar system, about 100 million kilometers (1 astronomical unit) from the sun. The Earth rotates from west to east while revolving around the Sun.

3. The moon. The moon is a spherical celestial body that orbits the Earth and is the Earth's only natural satellite.

In Chinese, it is commonly known as the moon or moon, and in ancient times, it was also called Taiyin, Xuantu, Chanjuan, and Yupan. The Moon is the fifth largest moon in the solar system, with an average radius of about one kilometer, which is twice the radius of the Earth.

4. Jupiter. Jupiter is the fifth closest planet to the Sun and the largest planet in the solar system, the ancients have known this planet for a long time, and the Romans named the planet after the main god Jupiter.

5. Mars. Mars (English: mars; Latin:

martis；Astronomical symbol: ) is the fourth closest planet to the Sun and the second smallest planet in the Solar System after Mercury, and is one of the four terrestrial planets in the Solar System. In ancient Europe, Mars was called Mars, the god of war in ancient Roman mythology, also known as the "Red Planet".

Stars can be seen in space. Stars can be seen on Earth because the light emitted by the stars is perceived by our eyes. Humans can see things because light enters our eyes, and we can see stars on Earth because "starlight" enters our eyes.

It has nothing to do with the atmosphere. In fact, the atmosphere is instead stargazing.

According to the ** and rumors circulating on the Internet, outer space is pitch black and there are no stars in sight, and Armstrong said that he can't see stars in space. This is because there are no stars to be seen during the day on the Moon, but the sky is dark, and this is because the Moon, unlike the Earth, has no atmosphere and no scattering; The moon's daytime sunlight is very bright and obscures the starlight.

Why can't I see stars in outer space? Know.