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Perm (Russian: Пермь, IPA: [pʲɛrmʲ]), previously known as Yagoshikha (Ягошиха) (1723–1781), and Molotov (Мо́лотов) (1940–1957), is the largest city and the administrative centre of Perm Krai, Russia. The city is located on the banks of the Kama River, near the Ural Mountains, covering an area of 799.68 square kilometres (308.76 square miles), with a population of over 1 million residents. Perm is the fourteenth-largest city in Russia, and the fifth-largest city in the Volga Federal District.
In 1723, a copper-smelting works was founded at the village of Yagoshikha. In 1781 the settlement of Yagoshikha became the town of Perm. Perm's position on the navigable Kama River, leading to the Volga, and on the Siberian Route, across the Ural Mountains helped it become an important trade and manufacturing centre. It also lay along the Trans-Siberian Railway.
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The Sun is the star at the center of the Solar System. It is a nearly perfect sphere of hot plasma, heated to incandescence by nuclear fusion reactions in its core, radiating the energy mainly as light and infrared radiation. It is by far the most important source of energy for life on Earth. Its diameter is about 1.39 million kilometres (864,000 miles), or 109 times that of Earth, and its mass is about 330,000 times that of Earth. It accounts for about 99.86% of the total mass of the Solar System.
Roughly three quarters of the Sun's mass consists of hydrogen (~73%); the rest is mostly helium (~25%), with much smaller quantities of heavier elements, including oxygen, carbon, neon, and iron.The Sun is a G-type main-sequence star (G2V) based on its spectral class. As such, it is informally and not completely accurately referred to as a yellow dwarf (its light is closer to white than yellow). It formed approximately 4.6 billion years ago from the gravitational collapse of matter within a region of a large molecular cloud. Most of this matter gathered in the center, whereas the rest flattened into an orbiting disk that became the Solar System. The central mass became so hot and dense that it eventually initiated nuclear fusion in its core. It is thought that almost all stars form by this process.
Groningen ( GROHN-ing-ən, also UK: GRON-, US: KHROHN-, Dutch: [ˈɣroːnɪŋə(n)] (listen);...
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