Bremen vs Sun

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The City Municipality of Bremen (, also US: ; German: Stadtgemeinde Bremen, IPA: [ˈʃtatɡəˌmaɪndə ˈbʁeːmən] (listen); Low German also: Breem or Bräm) is the capital of the German federal state Free Hanseatic City of Bremen (also called just "Bremen" for short), a two-city-state consisting of the cities of Bremen and Bremerhaven. With around 570,000 inhabitants, the Hanseatic city is the 11th largest city of Germany as well as the second largest city in Northern Germany after Hamburg. Bremen is the largest city on the River Weser, the longest river flowing entirely in Germany, lying some 60 km (37 mi) upstream from its mouth into the North Sea, and is surrounded by the state of Lower Saxony. A commercial and industrial city, Bremen is, together with Oldenburg and Bremerhaven, part of the Bremen/Oldenburg Metropolitan Region, with 2.5 million people. Bremen is contiguous with the Lower Saxon towns of Delmenhorst, Stuhr, Achim, Weyhe, Schwanewede and Lilienthal. There is an exclave of Bremen in Bremerhaven, the "Citybremian Overseas Port Area Bremerhaven" (Stadtbremisches Überseehafengebiet Bremerhaven). Bremen is the fourth largest city in the Low German dialect area after Hamburg, Dortmund and Essen.

Bremen's port, together with the port of Bremerhaven at the mouth of the Weser, is the second largest port in Germany after the Port of Hamburg. The airport of Bremen (Flughafen Bremen "Hans Koschnick") lies in the southern borough of Neustadt-Neuenland and is Germany's 12th busiest airport. Bremen is a major cultural and economic hub of Northern Germany. The city is home to dozens of historical galleries and museums, ranging from historical sculptures to major art museums, such as the Bremen Overseas Museum (Übersee-Museum Bremen). The Bremen City Hall and the Bremen Roland are UNESCO World Heritage Sites. Bremen is well known through the Brothers Grimm's fairy tale "Town Musicians of Bremen" (Die Bremer Stadtmusikanten), and there is a statue dedicated to it in front of the city hall. Bremen has a reputation as a working-class city. The city is home to many multinational companies and manufacturing centers. Companies headquartered in Bremen include the Hachez chocolate company and Vector Foiltec. Bremen's best known football club is Bundesliga club SV Werder Bremen, who play in the Weser Stadium (Weserstadion), that sits directly on the bank of the Weser.

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