Probably, many of us in childhood examined the starry sky, especially on warm August nights. The mysterious black space has always aroused people's interest. We, like our ancestors, are trying to understand what this unknown world is fraught with? It is sometimes difficult to answer this and many other questions that children very often ask their parents. And what is space for us adults? What do we know about him?
Order and harmony
From the explanatory dictionaries, you can find out that in Greek the word "cosmos" means "harmony", "order". Ancient Greek philosophers, by this word, meant the entire Universe, considering it as an ordered system that differed, in contrast to disorder and chaos, in harmony. There was a time when scientists included the whole nature of the Earth, everything that happens on it in this concept. It also included celestial bodies, planets, stars, galaxies. Known titanic work called "Space". The author Alexander Humboldt enclosed in his five volumes all the information about nature known at that time. That is, it was all about space.
Universe
What is space in our time? This concept is endowed, perhaps, with its true meaning and means "Universe". After all, space includes stars, planets, asteroids, comets, a variety of cosmic bodies, as well as all interstellar space. And these components are interconnected. They exist, obeying laws known only to them, and people always tried to solve these laws. Attempts to understand what space is likely to never stop. This riddle excites people's minds.
Near and deep space
Conventionally, the entire space of the Universe is divided into far and near space (near-Earth space). The territory, which is located directly near our planet, is actively studied using satellites. These are special vehicles that allow a person to take an active part in space exploration. A large number of satellites explore near-Earth space on their own.
Deep space is not accessible to humans. But let's hope that only temporarily. This territory will also someday be occupied by man.
Milky Way
Scientists believe that space consists of a large number of galaxies. The word "galaxy" comes from the Greek "galaktikos" and means "milk". That is why the name of ours, in which the Earth, the solar system and all visible stars are located, is the "Milky Way".
Each of the galaxies has its own specific structure, and they, in turn, consist of different systems of stars. Our solar system is the main star of the sun and the planets revolving around it. There is a large number of various cosmic bodies, as well as cosmic dust. A magnetic field allows all of this to stick together and revolve around the sun. Each planet has its own path or orbit. Many of them have their own natural satellites orbiting them.
Thinking about what the cosmos is, we always come to the conclusion: it is so mysterious and mysterious that you can talk about it indefinitely. Each of the celestial bodies is unique and, in turn, can become a topic for discussion. And a person will explore all this boundless space, as long as he exists and is his small particle.