Q&A on why the sun is the sun

• sunlight

  There are two main reasons for roundness: 1. The movement of objects in the universe will always be affected by various gravitations, so they both revolve and rotate, and the centripetal force of rotation shapes them into spheres; 2. It is related to the surface tension of the object, just like a drop of water will appear spherical in a vacuum

  sunlight astronomy

  1 answer

• sunlight

  Every celestial body has mass. When an object has mass, it has gravity. This gravity has something to do with other objects and something to do with itself. The mass of the sun is very large. It has gravity on nearby celestial bodies as well as on itself. The sun attracts itself from the outside to the inside. Since the forces on all parts are almost equal, they are generally spherical. In fact, the sphericity of each large celestial body is the reason.

  sunlight astronomy

  1 answer

• Why is the sun round?

  First of all, the sun is a gaseous planet, so it is not surprising that most of it is really composed of hydrogen and helium. At the beginning, the sun was a loose mass of gas, which slowly contracted and gathered together due to the gravitational action between gas molecules. I guess you don't understand why it is round rather than square after shrinking. You think, in the universe, the distance between stars is very far, and the impact is very small, so basically, the force on each molecule is balanced

  sunlight astronomy

  1 answer

• Why is the sun round~

  Because he is square, he is not good-looking. Hehe is joking. In fact, the universe is in motion, and almost every planet is rotating. A rotating object with several hundred billion years, can it not be round? If you take a square object and let it rotate for hundreds of years, it will become round due to the centrifugal force, not to mention that stars are created and destroyed in rotation. A non rotating planet will not have a stable shape. It will be attracted by other rotating spheres, thus causing a comet to hit the earth

  sunlight astronomy

  6 answers

• Why is the sun red in the morning

  Because air scatters red light most. The sun's light passes through the thickest atmosphere in the morning and evening, and most of the light of other colors is reflected into space, while most of the red light is scattered to our eyes by the air, so the sun looks red in the morning and evening. At noon, the atmosphere through which the sunlight passes is thin, and it is almost vertically incident. The scattering effect of the air on the colored light is not obvious, so we see the white light mixed with seven colors.

  sunlight astronomy

  5 answers

• Why is the sun red

  Well, the sun only looks red when it is rare, right? Is it a white ball of light most of the time? When it is red, it is because the angle of view from where we stand is very low. That is the farthest time of the day when the sun passes through the atmosphere and reaches our eyes. It has to go the farthest. It encounters the most impurities and reflections, so the red light with the longest wavelength reaches the most, so it looks red.

  sunlight astronomy

  5 answers

• Why is the sun red

  The sun is not red, but emits a yellowish white light. There are a lot of fine dust and tiny water droplets floating in the air, and sunlight is scattered in the atmosphere around the earth (in addition, air molecules are also playing a role). The purple light, indigo light and blue light with shorter wavelength are scattered more, and they mix together to form a blue sky. In the early morning and at sunset, light slants through the thick atmosphere. In such a long journey

  sunlight astronomy

  4 answers

• Why is the sun red

  The sun's stellar spectrum is classified as G-type main sequence star (G2V). Although it is white, the yellow green part of the visible light spectrum is the strongest. When viewed from the earth's surface, the scattering of the atmosphere makes the sky blue, so it appears yellow.

  sunlight astronomy

  1 answer

• The sun is the only thing in the solar system. The diameter of the sun is about kilometers.

  Star diameter 1.4 million km

  astronomy

  1 answer

• Questions about the sun

  In the universe, there is almost no friction, so as long as there is a little force between objects, they will affect and attract each other. We can first assume that some irregular objects attract each other and gradually approach each other. The greater the mass is, the greater the gravity (gravity) will be. Therefore, when they accumulate to a certain extent, the greater the mass becomes, which leads to the greater the gravity. These substances will continue to 'squeeze' inward (also known as collapse). Because Center

  sunlight astronomy

  5 answers

• Why is the morning sun red?

  The sun in the morning is blocked by clouds, and the light cannot be completely transmitted through the clouds, so it is red

  sunlight Education/Science

  2 answers

• Why is the sun a star?

  In fact, the process of forming the stellar light radiation shows that the photosphere layer is quite thick, and each layer has emission and absorption

  physics

  1 answer

• Why is the sun red at dusk

  This is due to the scattering of sunlight by air. Sunlight is broad-spectrum, from infrared to visible light, from visible to ultraviolet light. Its energy is concentrated in the visible light centered on the yellow light. In other words, the natural color of sunlight is yellow and white. Air scatters light passing through it. The light passing through the air will deviate from the original direction of motion and leave the original beam, and the shorter the wavelength of the light is (the light with short wavelength corresponds to the light with blue color, and the wavelength is

  astronomy

  1 answer

• Why is the sun round

  Yes, turn and turn. It will be round after a long time

  sunlight astronomy

  3 answers

• Why is the sun yellow?

  Because whether the sun rises slowly from the eastern horizon or falls into the western mountains, the distance of light waves emitted by the sun through the earth's atmosphere is more than twice the distance when the sun shines directly overhead. At this time, after the sunlight is absorbed and scattered by gas molecules, small dust, ice crystals and water drops suspended in the earth's atmosphere, most of the blue light and purple light with shorter wavelength in the light wave are absorbed or scattered, and only the red light and orange light with longer wavelength arrive at the ground and are observed

  sunlight Transportation

  1 answer

• Why is the sun round?

  Circle is the best choice for various planets. The largest surface area, the smallest volume, and the smallest moment of inertia during operation are also the natural selection of rotating objects.

  sunlight astronomy

  5 answers

• Why is the sun red?

  From a scientific point of view, the sun visible to our naked eyes emits white light, which is a mixture of seven colors of light: red, orange, yellow, green, blue, indigo and purple. As the wavelength of red light is longer than that of other visible light, the light wave of red light can pass through dust particles in the air, bypass obstacles and be recognized by the human eye. If you observe carefully, you will find that the sun is dazzling red in the morning or evening, like a fresh and delicious big apple. You might ask

  School age

  1 answer

• Why is the sun red?

  Because human blood is red, a disease of human eyes is called red eyes, so the sun is red. People with red eyes are very red when they see money. If a person's blood is blue and his blue eyes have a disease called blue eyes, then the sun he sees is blue. People with blue eyes are especially blue when working.

  sunlight Humor

  12 answers

• Why does the solar system center on the sun?

  The sun is the center of the solar system for three reasons: 1. The mass of the sun is 99.8% of all the celestial bodies in the solar system, and the sun is almost all; 2. Other celestial bodies in the solar system revolve around her because of the solar gravity, and the geometric center of almost space is the sun; 3. The external gravitational action space of the solar system is spherical, with the sun in the middle.

  sunlight astronomy

  5 answers