Did you know that the sky can change color? Know the reason!

The color of the sky is the result of the sum of several details. They are: sodium from shooting stars, scattering sunlight, and oxygen. So the doubt arises about a true color of the sky and a single color.

To answer these questions, it is necessary to assess where the light, molecules, atoms and some parts of the Earth's atmosphere came from.

In this way, when we see a bluish sky, it is because we are seeing scattered sunlight. That's because the Sun emits a very broad spectrum of visible light, which has all the colors of the rainbow, but the human eye can only perceive it as white. When this light passes through the air, molecules and atoms in the atmosphere scatter the light in all directions. This results in a blue sky and a white sun.

When we observe the sky at night, it is possible to notice that, even in the dark, it glows. This is the natural glow of the atmosphere, called

Thus, in visible light, oxygen makes red and green light, while hydroxyl molecules (OH) make red light and sodium yellow, which resembles disease. Finally, there is nitrogen, which is found abundantly in the air, but does not influence the brightness of the sky.

Therefore, the distinct coloration of the airglow it is a result of molecules and atoms, which in turn release specific amounts of energy, in the form of light. One example is that, at high altitudes, ultraviolet light is capable of splitting oxygen molecules (O2) into pairs of oxygen atoms, which produce a green glow when they recombine into oxygen molecules later.

So, the answer to sky colors is that, like almost everything in life, it is variable and depends on a few factors. It can be bright blue and even red, depending on the molecules, atoms and other factors that influence the color we perceive when we look up.

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