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…

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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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Star evolution
Like all bodies in nature, stars do not remain unchanged, they are born, evolve, and finally "die." To trace the life path of stars and understand how they age, you…

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solar system

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

Asteroids

The fact that in the solar system between the orbits of Mars and Jupiter numerous small bodies move, the largest of which are only stone blocks in comparison with the planets, less than 200 years ago. Their discovery was a natural step towards the knowledge of the world around us. This path was not easy and straightforward.

Who, in the era of the discovery of the first asteroids, could have suggested that these small bodies of the solar system, bodies that were often talked about quite recently with a touch of neglect, would be the object of attention of specialists in various fields: natural sciences, cosmogony, astrophysics, celestial Continue reading

The origin of the moon

The history of the evolution of the moon is interesting not only in itself, but also as part of the general problem of the origin of the Earth and other planets of the solar system. Recently, we have learned a lot about the physical and chemical characteristics of the moon. These data were obtained not only from the Earth, but also with the help of spacecraft. For example, the automatic stations Surveyor-5, -6, and -7, which made a soft landing on the moon in 1967 and 1968, made it possible for the first time to determine its chemical composition. Samples of lunar rocks delivered by American astronauts under the Apollo program (1969–1972) and Soviet automatic devices of the Luna series (1970–1976) made it possible to measure their chemical and physical characteristics in detail and determine the age of the moon . Continue reading

Supernova stars
About seven thousand years ago, a star suddenly exploded in a remote corner of outer space, dropping the outer layers of matter. A relatively large and massive star suddenly ran…

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Hubble Space Telescope
From the very beginning of astronomy, from the time of Galileo, astronomers have one common goal: to see more, to see further, to see deeper. And the Hubble Space Telescope,…

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Big Bang Scenario
Like any scheme that claims to explain the data on the spectrum of microwave cosmic radiation, the chemical composition of pre-galactic matter and the hierarchy of the scales of cosmic…

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Asteroid temperature
Asteroids are through and through cold, lifeless bodies. In the distant past, their bowels could be warm and even hot due to radioactive or some other heat sources. Since then,…

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