Kigali vs Sun

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Kigali (Kinyarwanda: [ci.ɡɑ́.ɾi]) is the capital and largest city of Rwanda. It's near the country's geographical centre in a region of rolling hills, with a succession of valleys and ridges joined by steep slopes. The town has been Rwanda's economic, cultural, and transportation hub because it became the capital following independence from Belgian rule in 1962. In a place controlled by the Kingdom of Rwanda from the 17th century and then by the German Empire, the city was founded in 1908 when Richard Kandt, the colonial resident, chose the site for his headquarters, citing its central location, views and safety. Foreign merchants started to trade in the city during the German era, and Kandt opened some government-run schools for Tutsi Rwandan students. Belgium took control of Rwanda and Burundi during World War I, forming the mandate of Ruanda-Urundi. Kigali remained the seat of colonial administration for Rwanda but Ruanda-Urundi's capital was at Usumbura (currently Bujumbura) in Burundi and Kigali remained a small city with a population of just 6,000 at the time of independence. Kigali grew slowly during the next decades. It wasn't initially directly affected by the Rwandan Civil War between government forces and the rebel Rwandan Patriotic Front (RPF), which started in 1990.

However, in April 1994 Rwanda's president was killed when his aircraft was shot down near Kigali. Social tensions erupted from the genocide that followed, with Hutu extremists loyal to the interim government killing an estimated 500,000--1,000,000 Tutsi and moderate Hutu nationwide. The RPF resumed fighting, finishing a cease-fire of over a year. They slowly took control of most of the country and captured Kigali on 4 July 1994. Post-genocide Kigali has experienced rapid population growth, with much of the town rebuilt. The city of Kigali is one of the five provinces of Rwanda, with boundaries set in 2006. It's divided into three districts--Gasabo, Kicukiro, and Nyarugenge--which historically had management of significant areas of local governance. Reforms in January 2020 moved a lot of the districts' power into the city-wide council. The town also hosts the main residence and offices of the President of Rwanda and many government ministries. The largest contributor to Kigali's gross domestic product is the service industry, but a significant proportion of the population works in agriculture such as small subsistence farming. Attracting international visitors is a priority for city authorities, including leisure tourism, conventions and exhibitions.

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