The discoverer of the ninth planet

DWARF PLANET

They dived to the bottom of hell, under the thick neon-methane atmosphere of Pluto. Flew in the snow storms of ammonia, every second fearing a break in the dark about huge needles durable as steel, water ice. They managed to find an area where there are mountains. The mystery of Pluto has been solved at last — this planet belongs to our Solar system. She captured her during the journey of the Sun through the Galaxy.

Ivan Efremov “Andromeda”

SEARCH OF THE WANDERERS

Amateur astronomer William Herschel, discoverer of Uranus

The discovery of Pluto, which for a long time officially considered the ninth planet of the Solar system, has its own history. Before the advent of telescopes humanity were well known five celestial bodies called planets (from the Greek for “Wanderers”, “wandering”): mercury, Venus, Mars, Jupiter, Saturn. During the four following centuries managed to open two more major planets, Uranus and Neptune.

The discovery of Uranium is remarkable that it did Amateur music teacher William Herschel. On March 13, 1781 he held the usual view of the sky and suddenly noticed a small yellow-green disk in the constellation of Gemini. At first Herschel thought he discovered a comet, but observations of other astronomers confirmed: open a real planet with a stable elliptical orbit.

Herschel the planet hotelnazare Georgia in honor of king George III, but the astronomical community has not agreed with him and decided that the name of any new planet must be consistent with other, i.e. be derived from classical mythology. Eventually the planet was named Uranus after the ancient Greek God of the heavens.

Observations of Uranus revealed an anomaly: the seventh planet of the Solar system stubbornly refused to follow the immutable laws of celestial mechanics, deviating from the calculated orbit. Double-astronomers developed the mathematical model of Uranium adjusted for the gravity of other planets, and twice that he “deceived” them. Then an assumption was made that Uranium is influenced by another planet beyond its orbit. 1 June 1846 in the journal of the French Academy of Sciences published an article of the mathematician Urbain the Verrier, in which he described the expected position of a hypothetical celestial body. On the night of September 24, 1846, at his hint of German astronomers Johann Galle and Heinrich d Arrah, without spending a lot of time searching, found an unknown object, which proved to be a big planet, subsequently named Neptune.

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