Introduction
Our galaxy, the star system of our solar system, is called the Milky Way. The Milky Way is a grand cluster of stars visible in the sky as a bright band of fog. In the ancient Greek, the word "galaktikos" means "milk", "milky", so the Milky Way and stellar systems similar to it are called galaxies. In our galaxy, there are more than 200 billion stars of very different luminosity and color ("The Milky Way Galaxy - 200 billion stars", 2016). The Solar neighborhood is the volume of the galaxy, where we can observe and study the stars of ...
