Amman vs Sun

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Amman (English:; Arabic: عَمّان‎ ʻammān pronounced [ʕamːaːn]) is the capital and largest city of Jordan and the country's economic, cultural and political centre. With a population of 4,007,526, Amman is the biggest city in the Levant area and the sixth-largest town in the Arab world.The earliest evidence of settlement in Amman is in a Neolithic site known as'Ain Ghazal, where some of the oldest human statues ever discovered dating to 7250 BC were uncovered. During the Iron Age, the city was known as Ammon, home to the Kingdom of the Ammonites. It was called Philadelphia during its Greek and Roman periods, and was finally called Amman during the Islamic period. For much of the middle and early Islamic periods (7th--14th centuries), it served as a centre for the Balqa district of Syria. Afterwards, Amman was a largely abandoned site before the late 19th century when Circassian immigrants were settled there by the Ottoman Empire in 1878. The first municipal council was established in 1909. Amman witnessed rapid growth after its designation as Transjordan's capital in 1921, and after several successive waves of refugees: Palestinians in 1948 and 1967; Iraqis in 1990 and 2003; and Syrians since 2011. It was originally built on seven hills but now spans over 19 hills combining 22 areas, which are administered by the Greater Amman Municipality headed by its mayor Yousef Shawarbeh.

Areas of Amman have gained their titles from either the hills (Jabal) or the valleys (Wadi) they occupy, such as Jabal Lweibdeh and Wadi Abdoun. East Amman is predominantly filled with historical sites that frequently host cultural activities, while West Amman is more modern and serves as the financial centre of the city.Approximately two million visitors arrived in Amman in 2014, which made it the 93rd most visited city in the world and the 5th most visited Arab city. Amman has a relatively fast growing market, and it is ranked as a Beta− worldwide city by the Globalization and World Cities Research Network. In addition, it was named among the Middle East and North Africa's finest cities based on economic, labour, environmental, and socio-cultural factors. The city is one of the most popular locations in the Arab world for multinational corporations to establish their regional offices, together with Doha and just behind Dubai. It is expected that in the next 10 years these three towns will capture the largest share of multinational corporation activity in the area.

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