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Vancouver | |
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Vancouver ( (listen) van-KOO-vər) is a major city in western Canada, located in the Lower Mainland region of British Columbia. As the most populous city in the province, the 2016 census recorded 631,486 people in the city, up from 603,502 in 2011. The Greater Vancouver area had a population of 2,463,431 in 2016, making it the third-largest metropolitan area in Canada. Vancouver has the highest population density in Canada, with over 5,400 people per square kilometre, which makes it the fifth-most densely populated city with over 250,000 residents in North America, behind New York City, Guadalajara, San Francisco, and Mexico City. Vancouver is one of the most ethnically and linguistically diverse cities in Canada: 52% of its residents are not native English speakers, 48.9% are native speakers of neither English nor French, and 50.6% of residents belong to visible minority groups.Vancouver is consistently named as one of the top five worldwide cities for livability and quality of life, and the Economist Intelligence Unit acknowledged it as the first city ranked among the top ten of the world's most well-living cities for ten consecutive years. However, Vancouver also ranks as the most expensive city to live in Canada and as the fourth-most expensive housing market globally. In 2011, the city planned to become the greenest city in the world by 2020. Vancouverism is the city's urban planning design philosophy.
Vancouver was originally named Gastown and began as a settlement which grew around the site of a makeshift tavern on the western edges of Hastings Mill that was built on July 1, 1867 and owned by proprietor Gassy Jack.
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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.