Fortaleza vs Sun

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Fortaleza ([foxtaˈlezɐ], locally [fɔɦtaˈlezɐ], Portuguese for Fortress) is the state capital of Ceará, located in Northeastern Brazil. It belongs to the Metropolitan mesoregion of Fortaleza and microregion of Fortaleza. It is Brazil's 5th largest city and the twelfth richest city in the country in GDP. It also has the third richest metropolitan area in the North and Northeast regions. It is an important industrial and commercial center of Brazil, the nation's eighth largest municipality in purchasing power. According to the Ministry of Tourism, the city reached the mark of second most desired destination of Brazil and fourth among Brazilian cities in tourists received.

The BR-116, the most important highway of the country, starts in Fortaleza. The municipality is part of the Common Market of Mercosur Cities, and also the Brazilian state capital which is closest to Europe, 5608 km (3484 miles) from Lisbon, Portugal.To the north of the city lies the Atlantic Ocean; to the south are the municipalities of Pacatuba, Eusébio, Maracanaú and Itaitinga; to the east is the municipality of Aquiraz and the Atlantic Ocean; and to the west is the municipality of Caucaia. Residents of the city are known as Fortalezenses. Fortaleza is one of the three leading cities in the Northeast region together with Recife and Salvador.

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