Sun vs Como

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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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Como (Italian pronunciation: [ˈkɔːmo] (listen), locally [ˈkoːmo] (listen); Comasco: Còmm [ˈkɔm], Cómm [ˈkom] or Cùmm [ˈkum]; Latin: Novum Comum; Romansh: Com) is a city and comune in Lombardy, Italy. It is the administrative capital of the Province of Como. Its proximity to Lake Como and to the Alps has made Como a tourist destination, and the city contains numerous works of art, churches, gardens, museums, theatres, parks, and palaces: the Duomo, seat of the Diocese of Como; the Basilica of Sant'Abbondio; the Villa Olmo; the public gardens with the Tempio Voltiano; the Teatro Sociale; the Broletto or the city's medieval town hall; and the 20th-century Casa del Fascio.

With 215,320 overnight guests in 2013, Como was the fourth-most visited city in Lombardy after Milan, Bergamo, and Brescia. In 2018, Como surpassed Bergamo becoming the third most visited city in Lombardy with 1.4 million arrivals.Como was the birthplace of many historical figures, including the poet Caecilius mentioned by Catullus in the first century BCE, writers Pliny the Elder and Pliny the Younger, Pope Innocent XI, scientist Alessandro Volta, and Cosima Liszt, second wife of Richard Wagner and long-term director of the Bayreuth Festival, and Antonio Sant'Elia, (1888–1916) Futurist architect and pioneer of the modern movement.

Source: Wikipedia