Östersund vs Sun

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Östersund (pronounced [œstɛˈʂɵnːd] (listen); Southern Sami: Staare) is an urban area (city) in Jämtland in the middle of Sweden. It is the seat of Östersund Municipality and the capital of Jämtland County. Östersund is located at the shores of Sweden's fifth largest lake, Storsjön, opposite the island Frösön, and is the only city in Jämtland. Östersund is the region's cultural and economical centre and by tradition a city of trade and commerce. Östersund had one of the most extensive garrisons in Sweden prior to its closure in the early-21st century. The city is the Mid Sweden University's largest campus site with approximately 7,000 students. With a total population of 50,960 (2017) Östersund is the 22nd most populous city in Sweden, the 46th most populous city in Scandinavia, and by far the largest inland city in Northern Sweden. The city was the only Swedish city founded and chartered in the 18th century. Östersund was founded in order to create a trade monopoly over Jämtland whose inhabitants' lucrative trade annoyed the Swedish crown. The intention was to persuade the local farmers to deliver merchandise to middlemen in Östersund, but the population opposed this economic philosophy, and Östersund long remained small. It took until the end of the 19th century for Östersund to truly become a city, after the arrival of the railroad and the economic liberalization of that time.

Östersund is situated in inland Scandinavia and connected to Sundsvall in the east on the Swedish coast, and Trondheim in the west at the shores of the Norwegian Sea. Östersund is located in the middle of Scandinavia, in the middle of Sweden, in the middle of Jämtland County and in the middle of Östersund Municipality. As the most centrally located city in Sweden, the city credits itself as the centre of Sweden.Östersund is marketed as Vinterstaden – Winter City. Winter City as a project is run by the Municipality together with city enterprises. Östersund has had a long history as a centre of outdoor activities with a modern cross-country ski stadium and an actual piste in the city itself. Östersund has also hosted several World Championships in various sports such as biathlon, speed skating and ski orienteering along with Swedish National Championships in cross country skiing and snocross. The city has been the applicant city of Sweden for several Winter Olympic Games, but has yet to host one. The precursor to the Winter Olympic Games, the Nordic Games, were however held at several occasions in the city, due to lack of snow in Stockholm.

Source: Wikipedia

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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.

In its core the Sun currently fuses about 600 million tons of hydrogen into helium every second, converting 4 million tons of matter into energy every second as a result. This energy, which can take between 10,000 and 170,000 years to escape the core, is the source of the Sun's light and heat. When hydrogen fusion in its core has diminished to the point at which the Sun is no longer in hydrostatic equilibrium, its core will undergo a marked increase in density and temperature while its outer layers expand, eventually transforming the Sun into a red giant. It is calculated that the Sun will become sufficiently large to engulf the current orbits of Mercury and Venus, and render Earth uninhabitable – but not for about five billion years. After this, it will shed its outer layers and become a dense type of cooling star known as a white dwarf, and no longer produce energy by fusion, but still glow and give off heat from its previous fusion. The enormous effect of the Sun on Earth has been recognized since prehistoric times. The Sun has been regarded by some cultures as a deity. The synodic rotation of Earth and its orbit around the Sun are the basis of solar calendars, one of which is the predominant calendar in use today.

Source: Wikipedia