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The sun is yellow because it emits more photons with a wavelength and frequency of what our brain interprets as yellow light. The colour of stars, like the sun, depends on how hot they are. A red star is cooler than a yellow star, which is cooler than a blue star. Our sun is about in the middle range (slightly above average). The colour of stars is when an equilibrium is reached between the rate of thermonuclear reactions inside the star, and the amount of heat emited at the surface. At that equilibrium stars can last many billions of years. (factors to take into account when astronomers calculate the color of stars include: mass, size, gravitational force). Now you might wonder what made the sun of such a mass and size and the answer has to due with the initial formation of the solar system. Also remember that stars can change their size in the long run, thus we expect the sun to become a red giant in a couple of billions of years (that would mean that it has "cooled off" - it is more complicated than that but that's good enough for now. For more information check out official astronomy websites)
The sky is blue because the atmosphere reflects light from the sun in a specific way. The atmosphere is composed of air vapor and molecules such as nitrogen, oxygen and carbon dioxide molecules. Because of the size and structure of these molecules, light with a shorter wavelength (blue) will be scattered more readily than light with longer wavelength (red). Therefore more blue light is scattered in the atmosphere, making the sky blue. This is to our benefit because shorter wavelength light (higher frequency) is harmful to our DNA, and by scattering it, less reaches the Earth's surface.
What else can I help you with?
Why is the sky yellow at night?
The sky appears yellow at night due to the scattering of light from the sun as it sets. This scattering causes shorter blue and green wavelengths to be filtered out, leaving longer red and yellow wavelengths to dominate the sky's color.
Why does the sky look yellow during sunrise and sunset?
During sunrise and sunset, the sun is lower in the sky, causing its light to pass through more of the Earth's atmosphere. This scatters shorter blue and green wavelengths, leaving longer red and yellow wavelengths to dominate the sky's color, making it appear yellow.
Why is the sky and water blue?
The sky is blue because of Rayleigh scattering -- blue photons scatter off air molecules to a large extent, while the other colors travel directly in straight lines from the sun, making the sky appear blue and the sun appear yellow (white minus blue). In space, or on the airless moon, the sky is black and sun is white. It is NOT true that oceans look blue due to sky reflection. Water also scatters blue light, so the explanation of its color is largely the same as that for the sky.
Why the sky changes color at sunset?
During sunset, sunlight passes through more of the Earth's atmosphere, scattering shorter wavelengths like blue and violet, leaving longer wavelengths like red and orange to dominate the sky. This scattering effect causes the sky to change color as the sun sets.
Why is the sky yellow during sunrise and sunset?
During sunrise and sunset, the sky appears yellow because of the way sunlight is scattered in the Earth's atmosphere. The light from the sun has to pass through more of the atmosphere at these times, causing shorter blue and green wavelengths to be scattered away, leaving longer red and yellow wavelengths to dominate the sky's color.
When humans look at the sky it appears blue but the Sun appears yellow. What causes this phenomenon?
The atmosphere scatters blue light more than yellow light.
Why is the sky not yellow?
The sky isn't yellow because it is blue!!!! HA!
Why is the sky yellow at night?
The sky appears yellow at night due to the scattering of light from the sun as it sets. This scattering causes shorter blue and green wavelengths to be filtered out, leaving longer red and yellow wavelengths to dominate the sky's color.
Why is grass green instead of blue?
Well, the grass is green because the sky is blue and the sun is yellow so mix them together and you get GREEN!!!
Why sky is not banana coloured?
A clear cloudless day-time sky is blue because molecules in the air scatter blue light from the sun more than they scatter yellow light.
When does the blue sky turn from blue to sunset?
The blue sky turns from blue to sunset colors when the sun is lower in the sky during sunset. This change in color is due to the scattering of sunlight by particles and gases in the atmosphere, causing shorter blue wavelengths to scatter and longer red wavelengths to dominate the sky's color.
What is the name of the yellow star in the sky?
The yellow star in the sky is called the Sun. It is the closest star to Earth and provides us with light, heat, and energy.
What color would the sky be if there was no ocean?
under the clouds it would probably be space or yellow depending on the time and the sun
What color is the Argentinian flag?
The colors of the Argentinian flags are sky blue, white and yellow. it has a white color middle area where a yellow color sun picture is visible. However the top and bottom borders are sky blue.
What does blue and yellow symbol mean?
the blue means the sky and the yellow means the yellow grass and wheat.
Why does the sky look blue and the sun look yellow during the day?
The sky looks blue due to Rayleigh scattering, where shorter blue wavelengths are scattered more than longer red wavelengths by gases and particles in the atmosphere. The sun appears yellow or orange as its white light is dispersed by the atmosphere, causing shorter blue wavelengths to scatter and leaving longer red and yellow wavelengths to be more visible.
What does the blue on the Mayan flag mean?
The blue on the Mayan flag stands for the sky. (in case you want to know, the red is for fire, the white for peace and the yellow for the sun)
