Sun vs Orleans

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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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Orléans (UK: ; US: , French: [ɔʁleɑ̃] (listen)) is a prefecture and commune in north-central France, about 120 kilometres (74 miles) southwest of Paris. It is the capital of the Loiret department and of the Centre-Val de Loire region. Orléans is located on the Loire River nestled in the heart of the Loire Valley, classified as a World Heritage Site, where the river curves south towards the Massif Central. In 2017, the city had 116,685 inhabitants within its municipal boundaries. Orléans is the center of Orléans Métropole that has a population of 286,257, the 20th largest in France. The larger metropolitan area has a population of 444,681. The city owes its development from antiquity to the commercial exchanges resulting from the river. An important river trade port, it was the headquarters of the community of merchants frequenting the Loire River.

It was the capital of the Kingdom of France during the Merovingian period and played an important role in the Hundred Years' War, particularly known for the role of Joan of Arc during the Siege of Orléans. Every first week of May since 1432, the city pays homage to the "Maid of Orléans" during the Johannic Holidays which has been listed in the inventory of intangible cultural heritage in France. One of Europe's oldest universities was created in 1306 by Pope Clement V and re-founded in 1966 as the University of Orléans, hosting 19,000 students in 2019. The Île d'Orléans in Quebec, Canada is named after Orléans in France as well as Orléans, Ontario and the former French colony New Orleans, Louisiana (French: La Nouvelle-Orléans).

Source: Wikipedia