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2 days ago · The Sun is a G-type main-sequence star (G2V), informally called a yellow dwarf, though its light is actually white. It formed approximately 4.6 billion years ago from the gravitational collapse of matter within a region of a large molecular cloud.
3 days ago · Humans know of only one star that hosts life, the G-class Sun, a star with an abundance of heavy elements and low variability in brightness. The Solar System is also unlike many stellar systems in that it only contains one star (see Habitability of binary star systems ).
3 days ago · The Sun is classified as a G-type main-sequence star, with a lifespan of about 10 billion years, and it has a complex system of magnetic activity that produces sunspots, flares, and coronal mass ejections that can affect Earth's space environment.
2 days ago · The sun is a star that constantly emits a steady stream of plasma – highly energized ionized gas – called the solar wind. In addition to the constant solar wind, the sun also occasionally ...
3 days ago · A star is a luminous spheroid of plasma held together by self-gravity. The nearest star to Earth is the Sun. Many other stars are visible to the naked eye at night; their immense distances from Earth make them appear as fixed points of light.
5 days ago · Milky Way Galaxy (sometimes simply called the Galaxy), large spiral system of about several hundred billion stars, one of which is the Sun. It takes its name from the Milky Way, the irregular luminous band of stars and gas clouds that stretches across the sky as seen from Earth.
5 days ago · The power of the Sun at the Earth, per square metre is called the solar constant and is approximately 1370 watts per square metre (W/m 2 ). The solar constant actually varies by +/-3% because of the Earth's slightly elliptical orbit around the Sun.
