Sun vs Mosul

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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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Mosul (Arabic: الموصل‎, romanized: al-Mawṣil, Kurdish: Mosil ,مووسڵ‎, Syriac: ܡܘܨܠ‎, romanized: Māwṣil) is a major city in northern Iraq. Located approximately 400 km (250 mi) north of Baghdad, and 170 km (110 mi) southeast of the Turkish city of Cizre, Mosul stands on the west bank of the Tigris, opposite the ancient Assyrian city of Nineveh on the east bank. The metropolitan area has grown to encompass substantial areas on both the "Left Bank" (east side) and the "Right Bank" (west side), as the two banks are described by the locals compared to the flow direction of Tigris. At the start of the 21st century, Mosul and its surroundings had an ethnically and religiously diverse population; the majority of Mosul's population were Arabs, with Assyrians, Armenians, Turkmens, Kurds, Yazidis, Shabakis, Mandaeans, Kawliya, Circassians in addition to other, smaller ethnic minorities. In religious terms, mainstream Sunni Islam was the largest religion, but with a significant number of followers of Christianity (mostly Assyrians and Armenians), as well as Shia Islam, Sufism, Yazidism, Shabakism, Yarsanism and Mandaeism.

Mosul's population grew rapidly around the turn of the millennium and by 2004, the city's population was estimated to be 1,846,500. In 2014, the Islamic State of Iraq and the Levant seized control of the city. The Iraqi government recaptured it in the Battle of Mosul three years later, during which the city sustained heavy damage. Historically, important products of the area include Mosul marble and oil. The city of Mosul is home to the University of Mosul and its renowned medical school, which together was one of the largest educational and research centers in Iraq and the Middle East. Mosul, together with the nearby Nineveh plains, is one of the historic centers of the Assyrian people and their churches; the Chaldean Catholic Church, the Syriac Orthodox Church, and the Assyrian Church of the East, containing the tombs of several Old Testament prophets such as Jonah, some of which were destroyed by ISIL in July 2014.

Source: Wikipedia