Communication satellites
Signalers were among the first to receive practical benefits from the launch of satellites. The launch of satellite transponders into near-Earth orbit made it possible to solve the problem of…

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Moon relief
Traditionally, two main types of landscape — continents and the sea — stand out on the moon. The prevailing shape of the relief of the lunar surface is the lunar…

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Lunar eclipses
When, when moving around the Earth, the Moon falls into the cone of the earth’s shadow, which is cast by the globe illuminated by the Sun, a total lunar eclipse…

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the rotation

Time and Calendar

In very ancient times, people did not have a correct idea of ​​the shape and size of our planet and what place it occupies in space. Now we know that the physical surface of the Earth, which is a combination of land and water, is geometrically very complex; it cannot be represented by any of the well-known and mathematically studied geometric figures. On the surface of the Earth, seas and oceans occupy about 71%, and land – about 29%; the highest mountains and the greatest depths of the oceans are negligible compared to the size of the entire earth. So, for example, on a globe with a diameter of 60 cm, Mount Everest with a height of approximately 8840 m appears as just a grain of 0.25 mm. Therefore, the body, limited by the surface of the oceans, in a calm state mentally continued under all continents, is taken for Continue reading

Solar system. Hypothesis on the origin of sunspots
In the solar system there are many different types of free celestial bodies that do not have their own orbits. Such bodies can be asteroids, meteorites, comets, as well as…

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Galaxy
Since the XVII century, the most important goal of astronomers has been the study of the Milky Way - this giant collection of stars that Galileo saw through his telescope.…

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Comets - Wanderers of the Solar System
Comets - (from the Greek. Kometes - "star with a tail", "comet", "shaggy"; literally - "long-haired"), small bodies of the solar system, rotating around the sun in elongated orbits and…

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Planet formation
Let us return to the satellites of our Sun, to those fragments of the nebula that broke away from the central clot under the action of centrifugal force and began…

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