Now right in front of you, light up the whole night, count the stars in the blink of an eye, perfect

Most of the stars we see are stars, and the planets can only see 5 Mercury, Venus, Mars, Jupiter, and Saturn. Uranus can sometimes be seen, as well as the Moon, Neptune and Pluto are too far away from us, and their brightness is so low that they are invisible to the naked eye. Sputnik can also be seen.

How we can tell if a star in the sky is a star or a star depends on whether the star wants you to blink, the star is very far away from the earth, and the light they emit will flash and flash due to the fluctuations of the earth's atmosphere, as if they are blinking.

The planet is close to us, and it can't emit light on its own, it can only reflect the light of the star, so it doesn't blink and looks like a large circle.

Stars move but within the range of the constellations and move very slowly, whereas planets move quickly between several constellations.

We can also tell which planet it is by its color, Venus is white Mercury, Jupiter is pale yellow, Mars is red, and Saturn is yellow.

Mars, Jupiter, and Saturn can also be seen in the middle of the night, but Mercury and Venus are not, because Mercury and Venus orbit closer to the Sun than the Earth, and they are in the sky during the day, and we can't see them because of the strong sunlight, and at night we turn away from the Sun and can't see them, and we can only see them at some times when the sun breaks and the sun sets, and the best time to see Mercury and Venus is when the angle between their orbits and the Earth reaches its maximum, commonly known as the great elongation, and Mercury and Venus are called the western elongation in the west of the Sun, in the east of the sun is called the eastern elongation.

Satellites can also be seen, and satellites can only be seen before the sun rises and after the sun sets, because at this time the satellites that can be illuminated by the sun's rays turn away from the sun at night, so the satellites are not invisible. The satellite must be over your location for you to see, and it moves very fast, and now the city is very polluted with light, it is difficult for the satellite to see, it is recommended to use a telescope.

1 is Mercury and Venus taken from Earth, and 2 is Venus that I photographed with my phone.

Near-Earth stars, such as Sirius in the winter night sky.

Most are stars, and a few are planets (Venus, Jupiter, etc.) and moons (Moon).

Fixed star. There are only 4 planets that can be seen at night. The rest of the thousands are stars.

Answer D analysis: Light propagates in a straight line in the same homogeneous medium, and the atmosphere is dense and dense, and when the light rays hit the atmosphere obliquely, it is similar to the oblique rays from the air into the water, and the refracted rays are constantly deflected

Answer: Most of the starlight is the light emitted by the stars in the universe, the luminescence of the stars is continuous, before the starlight spreads to the surface of the earth, in addition to passing through the vast cosmic vacuum area, it also has to pass through the atmosphere surrounding the earth, when the starlight enters the atmosphere from the vacuum, it needs to produce reflection and refraction, the starlight we see on the ground is the part of the light that is refracted by the atmosphere When the starlight passes through the air layer of different densities, it also needs to be refracted when the starlight passes through the air layer of different densities, generally speaking, the air is not static relative to the ground, It is always moving, and with the flow of air, the density of the air in the area that the observer is looking at will be larger and smaller, so the starlight passing through the area will be refracted, and it will be different, so the refracted light will constantly flutter and sway

Therefore, choose d Comments: Due to the continuous change of the density of the medium, the refracted light will be continuously deflected, forming many wonders in daily life, such as mirages, desert mirages, etc

Yes, because stars are stars themselves, and stars are characterized by emitting light and emitting a lot of heat.

Answer D analysis: The refraction of light refers to the phenomenon that the direction of propagation generally changes when it is shot from one medium into another medium during the propagation of light When we ** the stars, the stars are constantly twinkling, which is due to the refraction of the light emitted by the stars due to the atmosphere, causing us to see the stars twinkle and twinkle, which is very beautiful

Comments: Physical phenomena are everywhere in the world, and explaining these natural phenomena requires a wealth of physical knowledge If you want to understand the world and grasp the world, you must have a solid foundation of physical knowledge, supplemented by various other knowledge, and constantly explore and study references.

AnswerdThe blink of a star is not that the stars themselves are flickering, but that after the starlight enters the atmosphere from distant space, it is refracted due to the different densities of the upper and lower layers of the atmosphere The atmosphere composed of high-air currents and clouds is very unstable and changes at any time, which makes the refracted light swaying, and it seems that the stars are all twinkling and blinking, and when there is a lot of water vapor in the atmosphere, this flickering is particularly strong

The vast majority of starlight is the light emitted by the stars in the universe, the luminescence of the stars is continuous, before the starlight spreads to the surface of the earth, in addition to passing through the vast cosmic vacuum area, it also has to pass through the atmosphere surrounding the earth, when the starlight enters the atmosphere from the vacuum, it will produce reflection and refraction, and the starlight we see on the ground is the part of the light that passes through the atmosphere Refraction When the starlight passes through the air layer of different densities, it also needs to be refracted when the starlight passes through the air layer of different densities, generally speaking, the air is not static relative to the ground, it is always flowing, As the air flows, the density of the air in the area that the observer is looking at will be higher and smaller, so the starlight passing through the area will be refracted, which will be different, so the refracted light will constantly flutter and sway

Therefore, choose D

It can be found that looking at problems from different angles can have different conclusions, and we must learn to look at problems positively and comprehensively. You cry because you are pessimistic about seeing a single star, and I laugh because there is a star that is still with you. To learn to think with a positive mind, loneliness is not terrible, the key is to have a cheerful heart.

Home is a harbor for people, no matter what, home will always be waiting for you, so no matter what home you encounter, it will always give you warmth.

I looked up at the sky, and there was only a cloud above my head in the blue sky, moving constantly to guide me home, but I didn't know that he was blocking my view.

You think that you are the only one in the world, just like that star, but you don't know that the star is my expectation for your return, come back, I am still by your side.

You cried, thinking you couldn't find your way, so I laughed and planted a tree that would guide you home and grow by the side of the road you had to pass.

After reading this short poem, you can see the poet's attachment to relatives and friends born in a foreign land, in the first sentence you see a lonely self, and lead to the latter sentence, because of loneliness so homesick, there is a good saying, when life is not satisfactory, home is the most reassuring harbor.

You cry because what you see is full of loneliness, full of sorrow. In the deep blue night sky, only a lone star twinkled.

And I laughed, because I knew that even if the lights in the world were extinguished, there was still a not-so-bright star waiting for you, guarding you, guiding you, and making you no longer alone.

You cried because of what you saw.

It's when it's raining. Dirty road.

I laughed because I thought of it.

It was set up in the sky after the rain.

The seven-colored rainbow bridge.

Looking at things from different angles will lead to different conclusions, and when encountering difficulties and setbacks, it is necessary to face them with a calm and positive attitude.

Looking at the same thing with different attitudes means different things (or results).