Sun vs Toruń

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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

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Toruń (UK: , US: , Polish: [ˈtɔruj̃] (listen); German: Thorn) is a historical city on the Vistula River in north-central Poland, and a UNESCO World Heritage Site. Its population was 201,447 as of December 2019. Previously, it was the capital of the Toruń Voivodeship (1975–1998) and the Pomeranian Voivodeship (1921–1945). Since 1999, Toruń has been a seat of the self-government of the Kuyavian-Pomeranian Voivodeship and, as such, is one of its two capitals, together with Bydgoszcz. The cities and neighboring counties form the Bydgoszcz–Toruń twin city metropolitan area. Toruń is one of the oldest cities in Poland, with the first settlement dated back to the 8th century and later having been expanded in 1233 by the Teutonic Knights. Over centuries, it was the home for people of diverse backgrounds and religions. From 1264 until 1411 Toruń was part of the Hanseatic League and by the 17th century it was one of the elite trading points, which greatly affected the city's architecture ranging from Brick Gothic to Mannerism and Baroque.

In the early-modern age, Toruń was a royal city of Poland and it was one of the four largest cities in the country at the time. After the partitions of Poland it was part of Prussia and later the German Empire. After Poland regained independence in 1918, Toruń was reincorporated into Polish territory, and during World War II was spared from bombing and destruction. This allowed the Old Town to be fully preserved with its iconic central marketplace.Believed to be one of the most beautiful cities in Europe, Toruń is renowned for the Museum of Gingerbread, whose baking tradition dates back nearly a millennium, and its large Cathedral. Toruń is noted for its very high standard of living and quality of life. In 1997 the medieval part of the city was designated a UNESCO World Heritage Site. In 2007 the Old Town in Toruń was added to the list of Seven Wonders of Poland. Toruń is the birthplace of astronomer Nicolaus Copernicus.

Source: Wikipedia