Sun vs Zenica

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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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Zenica ( ZEN-it-sə; Serbo-Croatian Cyrillic: Зеница; Bosnian: [zěnitsa] (listen)), is a city and an administrative and economic center of the Zenica-Doboj Canton in the Federation of Bosnia and Herzegovina entity of Bosnia and Herzegovina. It is located in the valley of river Bosna, about 70 km (43 mi) north of the country's capital Sarajevo. The city is known for Zenica Ironworks and the second heavy industry but also as a significant university center. According to the final results of 2013 population census in BiH, the settlement of Zenica itself counts 70,553 citizens and the administrative area 110,663.The urban part of today's city is formed in several phases, including Neolithic, Illyrian, Roman Municipium Bistua Nuova (2nd–4th century) with early Christian dual basilica. Traces of an ancient settlement have been found here as well; villa rustica, thermae, a temple and other buildings were present too. Earliest findings in the place date from the period 3,000–2,000 B.C.; they were found on the localities of Drivuša and Gradišće. Zenica's current name was first mentioned on the 20 March 1436. Medieval church has been unearthed in Zenica, as well as Franciscan Monastery of St. Mary. Time of the independence of the Medieval Bosnia is directly connected to Zenica (Gradješa's plate and abdication act; Kulin ban's time; Vranduk, a castle of the Bosnian kings; Janjići and 'hižas' [homes] of the Bosnian Church members; stećci, stone tombstone monuments etc.

). During the Ottoman rule (1463–1878), Zenica became a Muslim town (kasaba); at the very end of the 17th century, Zenica had 2,000 citizens, mostly Muslims; Orthodox and Catholic Christians get mentioned again from the end of the 18th century, and Jews in the 19th century. Zenica has been mostly built in the Austro-Hungarian and Yugoslavian periods. The Number of citizens has been rising rapidly during the 20th century, and from the Bosnian War until 2013 city lost a quarter of its population. Municipality of Zenica became the City of Zenica in 2014. The city is geographically located in the heart of Bosnia. The area of the settled place is 43.01 km2 (16.61 sq mi) and of the city, 558.5 km2 (215.6 sq mi). The relief is valley-basin and the elevation 310–350 m (1,017–1,148 ft). Rivers Bosna, Lašva, Babina and Kočeva flow through the city itself. A moderate continental climate prevails. The city has 13 urban local settlements and the City consists of total 81 spread rural settlements. The city has nine national monuments. The football club Čelik is a landmark of Zenica, as is one of the tallest buildings on the Balkans – Lamela. Some of the most famous Zeničans are Semir Osmanagić, Anabela Basalo, Danis Tanović, Amar Jašarspahić Gile, Mladen Krstajić, Dejan Lovren, Mervana Jugić-Salkić and Amel Tuka.

Source: Wikipedia