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In the time of Newton, physicists imagined the world space as a huge "container" filled with various celestial bodies, between which there are forces of mutual attraction that have nothing to do with the properties of space itself. This understanding of space was only the first approach to truth. A deeper understanding of the structure of the universe and the intrinsic nature of gravitation was presented by Albert Einstein in his so-called general theory of relativity. The space of Einstein was...

More recently, astronomers did not take into account the non-stationarity of matter in the universe. They believed that space objects change little over time, and the stars and galaxies develop very slowly, without any significant changes. And, although variable stars were known, characterized by frequent changes in brightness, as well as flashes of new and supernova stars...

The forces of the planets play a huge role in the solar system and in the universe. But what is the force of gravity, that is, gravity? What is its nature? The first step in the study of the properties of the can be considered the discovery by Johann Kepler of the laws of the motion of the planets around the sun...

What would happen if people lived without stars? That is, do systematic observations of the starry sky have any practical importance for humanity, or could people have done absolutely without them? To answer this question, let us imagine for a moment that the earth’s sky is completely covered with a completely opaque cloud cover, which completely...

Today, in the age of cosmonautics and rocket science, when people are planning flights to other planets of the solar system, it is interesting to imagine how people would live on these planets. Probably, first of all, people need to learn how to navigate the terrain. Consider, for example, how not to get lost on the moon?..

You know, it happens that the results of research carried out in terrestrial conditions open up the possibility of a deeper penetration into the laws of space processes. This is exactly what happened when studying shock waves in space and the so-called cosmic "mysterium"...