Iași vs Sun

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Iași (UK: YASH-ee, US: YAHSH(-ee), Romanian: [ˈjaʃʲ] (listen)), also referred to as Jassy (UK: YASS-ee, US: YAH-see), is the second largest city in Romania, and the seat of Iași County. Located in the historical region of Moldavia, Iași has traditionally been one of the leading centres of Romanian social, cultural, academic and artistic life. The city was the capital of the Principality of Moldavia from 1564 to 1859, then of the United Principalities from 1859 to 1862, and the capital of Romania from 1916 to 1918. Known as The Cultural Capital of Romania, Iași is a symbol in Romanian history. The historian Nicolae Iorga said "There should be no Romanian who does not know of it". Still referred to as The Moldavian Capital, Iași is the main economic and business centre of the Moldavian region of Romania. In December 2018, Iași was officially declared Historical capital of Romania.At the 2011 census, the city proper had a population of 290,422 (making it the fourth most populous in Romania at the time).

With 500,668 residents (as of 2018), the Iași urban area is the second most populous in Romania (after Bucharest), whereas more than 500,000 people live within its peri-urban area.Home to the oldest Romanian university and to the first engineering school, Iași is one of the most important education and research centres of the country, and accommodates over 60,000 students in 5 public universities. The social and cultural life revolves around the Vasile Alecsandri National Theater (the oldest in Romania), the Moldova State Philharmonic, the Opera House, the Iași Athenaeum, a famous Botanical Garden (the oldest and largest in Romania), the Central University Library (the oldest in Romania), the high quality cultural centres and festivals, an array of museums, memorial houses, religious and historical monuments. The city is also known as the site of the largest Romanian pilgrimage which takes place each year, in October.

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