Sun vs Bergen

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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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Bergen (Norwegian pronunciation: [ˈbæ̀ɾɡn̩] (listen)), historically Bjørgvin, is a city and municipality in Vestland county on the west coast of Norway. At the end of 2019, the municipality's population was 283,929. Bergen is the second-largest city in Norway. The municipality covers 465 square kilometres (180 sq mi) and is on the peninsula of Bergenshalvøyen. The city centre and northern neighbourhoods are on Byfjorden, 'the city fjord', and the city is surrounded by mountains; Bergen is known as the 'city of seven mountains'. Many of the extra-municipal suburbs are on islands. Bergen is the administrative centre of Vestland county. The city consists of eight boroughs: Arna, Bergenhus, Fana, Fyllingsdalen, Laksevåg, Ytrebygda, Årstad, and Åsane. Trading in Bergen may have started as early as the 1020s. According to tradition, the city was founded in 1070 by king Olav Kyrre and was named Bjørgvin, 'the green meadow among the mountains'. It served as Norway's capital in the 13th century, and from the end of the 13th century became a bureau city of the Hanseatic League. Until 1789, Bergen enjoyed exclusive rights to mediate trade between Northern Norway and abroad and it was the largest city in Norway until the 1830s when it was overtaken by the capital, Christiania (now known as Oslo). What remains of the quays, Bryggen, is a World Heritage Site. The city was hit by numerous fires over the years. The Bergen School of Meteorology was developed at the Geophysical Institute starting in 1917, the Norwegian School of Economics was founded in 1936, and the University of Bergen in 1946.

From 1831 to 1972, Bergen was its own county. In 1972 the municipality absorbed four surrounding municipalities and became a part of Hordaland county. The city is an international center for aquaculture, shipping, the offshore petroleum industry and subsea technology, and a national centre for higher education, media, tourism and finance. Bergen Port is Norway's busiest in terms of both freight and passengers, with over 300 cruise ship calls a year bringing nearly a half a million passengers to Bergen, a number that has doubled in 10 years. Almost half of the passengers are German or British. The city's main football team is SK Brann and a unique tradition of the city is the buekorps. Natives speak a distinct dialect, known as 'Bergensk'. The city features Bergen Airport, Flesland and Bergen Light Rail, and is the terminus of the Bergen Line. Four large bridges connect Bergen to its suburban municipalities. Bergen has a mild winter climate, though with a lot of precipitation. From December to March, Bergen can be, in rare cases, up to 20 °C warmer than Oslo, even though both cities are at about 60° North. The Gulf Stream keeps the sea relatively warm, considering the latitude, and the mountains protect the city from cold winds from the north, north-east and east.

Source: Wikipedia