Sun vs Edinburgh

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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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Edinburgh ( (listen); Scots: Edinburgh; Scottish Gaelic: Dùn Èideann [ˈt̪uːn ˈeːtʲən̪ˠ]) is the capital of Scotland and one of its 32 council areas. Historically part of the county of Midlothian (interchangeably Edinburghshire before 1921), it is located in Lothian on the Firth of Forth's southern shore. Recognised as the capital of Scotland since at least the 15th century, Edinburgh is the seat of the Scottish Government, the Scottish Parliament and the supreme courts of Scotland. The city's Palace of Holyroodhouse is the official residence of the monarch in Scotland. The city has long been a centre of education, particularly in the fields of medicine, Scots law, literature, philosophy, the sciences and engineering. It is the second largest financial centre in the United Kingdom (after London) and the city's historical and cultural attractions have made it the United Kingdom's second most visited tourist destination attracting 4.9 million visits including 2.4 million from overseas in 2018.Edinburgh is Scotland's second most populous city and the seventh most populous in the United Kingdom. The official population estimates are 488,050 (2016) for the Locality of Edinburgh (Edinburgh pre 1975 regionalisation plus Currie and Balerno), 524,930 (2019) for the City of Edinburgh, and 1,339,380 (2014) for the city region.

Edinburgh lies at the heart of the Edinburgh and South East Scotland city region comprising East Lothian, Edinburgh, Fife, Midlothian, Scottish Borders and West Lothian.The city is the annual venue of the General Assembly of the Church of Scotland. It is home to national institutions such as the National Museum of Scotland, the National Library of Scotland and the Scottish National Gallery. The University of Edinburgh, founded in 1582 and now one of three in the city, is placed 20th in the QS World University Rankings for 2020. The city is also known for the Edinburgh International Festival and the Fringe, the latter being the world's largest annual international arts festival. Historic sites in Edinburgh include Edinburgh Castle, the Palace of Holyroodhouse, the churches of St. Giles, Greyfriars and the Canongate, and the extensive Georgian New Town built in the 18th/19th centuries. Edinburgh's Old Town and New Town together are listed as a UNESCO World Heritage site, which has been managed by Edinburgh World Heritage since 1999.

Source: Wikipedia