Amsterdam vs Sun

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Amsterdam (, UK also; Dutch: [ɑmstɛrˈdɑm] (listen)) is the capital and most populous city of the Netherlands with a population of 872,680 within the city proper, 1,558,755 from the metropolitan region and 2,480,394 from the metropolitan area. Located within the province of North Holland, Amsterdam is colloquially referred to as the"Venice of the North", attributed by the large number of canals that form a UNESCO World Heritage Site. Amsterdam's name derives from Amstelredamme, indicative of the town's origin around a dam in the river Amstel. Originating as a small fishing village in the late 12th century, Amsterdam became one of the most important ports in the world during the Dutch Golden Age of the 17th century, and became the leading centre for trade and finance. In the 19th and 20th centuries, the city expanded and many new neighbourhoods and suburbs were planned and built. The 17th-century canals of Amsterdam and the 19--20th century Defence Line of Amsterdam are on the UNESCO World Heritage List. Sloten, annexed in 1921 from the municipality of Amsterdam, is the oldest part of town, dating to the 9th century. Amsterdam's main attractions include its historic canals, the Rijksmuseum, the Van Gogh Museum, the Stedelijk Museum, Hermitage Amsterdam, the Concertgebouw, the Anne Frank House, the Scheepvaartmuseum, the Amsterdam Museum, the Heineken Experience, the Royal Palace of Amsterdam, Natura Artis Magistra, Hortus Botanicus Amsterdam, NEMO, the red-light district and Several cannabis coffee shops. It drew over 5 million international visitors in 2014. The city is also well known for its nightlife and festival activity; with several of its clubs (Melkweg, Paradiso) among the world's most famous. Primarily known for its artistic heritage, elaborate canal system and narrow houses with gabled façades; well-preserved legacies of the town's 17th-century Golden Age.

These attributes are arguably responsible for bringing millions of Amsterdam's visitors yearly. Cycling is vital to the city's character, and there are a lot of bike paths. The Amsterdam Stock Exchange is considered the earliest"modern" securities market stock exchange in the world. As the industrial capital of the Netherlands and among the top financial centres in Europe, Amsterdam is considered an alpha world city by the Globalization and World Cities (GaWC) research group. The city is also the cultural capital of the Netherlands. Many large Dutch institutions have their headquarters in the city, such as: the Philips conglomerate, AkzoNobel, Booking.com, TomTom, and ING. Moreover, many of the world's biggest companies are located in Amsterdam or have established their European headquarters in the city, such as leading technology companies Uber, Netflix and Tesla. In 2012, Amsterdam was ranked the second best city to live in by the Economist Intelligence Unit (EIU) and 12th globally on quality of living for infrastructure and environment by Mercer. The city was ranked 4th place globally as top tech hub in the Savills Tech Cities 2019 report (2nd in Europe), and 3rd in innovation by Australian innovation agency 2thinknow in their Innovation Cities Index 2009. The Port of Amsterdam is the fifth largest in Europe. The KLM hub and Amsterdam's key airport: Schiphol, is the Netherlands' busiest airport in addition to the third largest in Europe and 11th busiest airport in the world. The Dutch capital is considered one of the most multicultural cities in the world, with at least 177 nationalities represented.A few of Amsterdam's notable residents throughout history include: painters Rembrandt and Van Gogh, the diarist Anne Frank, and philosopher Baruch Spinoza.

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