The article reveals the meaning of the word "sky".
Origin, etymology
Often the word "heaven" is correlated with "heaven" and consider them very similar. The etymological dictionary of the Russian language indicates that both words came from one common Latin latin nebula (“nebula, haze, cloud”), which was formed from the pra-Indo-European nebh.
There is also a version that “heaven” and “heaven” come from the words “no demons”. Thus, this is a place where there are no demons and evil.
Meaning of the word
So, the sky is the space above the earth's surface, as well as any astronomical objects. Simply put, this is a panorama, a view that can be seen when viewed from the earth towards space. The view of the sky depends on various factors: time of day, weather, and also what time of the year it is on the street. Cloudless clear skies are blue, and at night they appear almost black. With the approach of a sunny sunset or sunrise, areas of yellow, red, purple and other shades appear. It should also be noted that if you look at the clouds from a plane flying at high altitude, their view will be different from what we would see if we looked at them from the ground.

The word has other meanings. One of them is associated with religion, on the basis of which we obtain the following definition. Heaven is a place, a world invisible to people, where God, saints and angels are; this is the place where paradise is located. In Russian, when it comes to belief, the word is capitalized. For example, in the Bible.
The encyclopedic dictionary also says that the sky is a septum that separates the oral and nasal cavities. But in this case, it is more correct to write and say not “heaven”, but “palate”. Soft and hard palates are part of the articulatory apparatus and participate in the pronunciation of sounds.
There is an outdated meaning of the word, which is also associated with faith. The dictionary of Tatyana Fyodorovna Efremova explains that heaven is divine powers, providence. The very term "providence" means the action of a higher power, that is, God, aimed at creating the greatest good (according to the dictionary of Brockhaus and Efron).
Thus, this word is characterized by ambiguity, which can be said about most Russian words.