Ptolemy's system.
The formation of astronomy as an exact science began thanks to the work of the outstanding Greek scientist Hipparchus. He first began systematic astronomical observations and their comprehensive mathematical analysis,…

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Universe
More than anything else - the Universe itself, covering and including all planets, stars, galaxies, clusters, superclusters and cells. The range of modern telescopes reaches several billion light years. Planets,…

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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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the observatory

The history of the discovery of Pluto

In the 1840s, with the help of Newtonian mechanics, Urbain Le Verrier predicted the position of the then undetected planet Neptune based on an analysis of perturbations of the orbit of Uranus. Subsequent observations of Neptune at the end of the 19th century led astronomers to suggest that, in addition to Neptune, another planet also has an impact on the orbit of Uranus. In 1906, Percival Lowell, a wealthy resident of Boston who founded the Lowell Observatory in 1894, initiated an extensive project to find the ninth planet in the solar system, which he named Planet X. By 1909, Lowell and William Henry Pickering had suggested several possible celestial coordinates for this planet. Lowell and his observatory continued to search for the planet until his death in 1916, but to no avail. In fact, on March 19, 1915, two low-level images of Pluto were obtained at his observatory without Lowell’s knowledge, but he was not recognized on them.

Mount Wilson Observatory could also claim the discovery of Pluto in 1919. That year, Milton Humason, on behalf of William Pickering, searched for the ninth planet, and Pluto’s image fell on a photographic Continue reading

WHITE Dwarfs
White dwarfs are one of the most fascinating topics in the history of astronomy: celestial bodies were discovered for the first time, possessing properties that are very far from those…

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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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Radiation of the sun
The radio emission of the Sun has two components - constant and variable. During strong solar flares, the radio emission of the Sun increases by a factor of thousands or…

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In search of a peace system
1. Introduction. The starry sky at all times occupied the imagination of people. Why do stars light up? How many of them shine in the night? Are they far from…

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