Sun - Wikipedia
WebThe Sun is a G-type main-sequence star that makes up about 99.86% of the mass of the Solar System. It has an absolute magnitude of +4.83, estimated to be brighter than about 85% of the stars in the Milky Way, most of which are red dwarfs. The Sun is a Population I, or heavy-element-rich, star.
Sun - National Geographic Society
WebFeb 2, 2024 · The sun is an ordinary star, one of about 100 billion in our galaxy, the Milky Way. The sun has extremely important influences on our planet: It drives weather, ocean currents, seasons, and climate, and makes plant life possible through photosynthesis. Without the sun’s heat and light, life on Earth would not exist.
Sun - Simple English Wikipedia, the free encyclopedia
WebThe Sun is a star like many others in our Milky Way galaxy. The Sun is a type of star called a G-type main-sequence star based on its spectral class. The Sun has existed for a little over 4.5 billion years. The Sun is about a hundred times as wide as the Earth. It has a mass of 1.9891 × 10 30 kg.
The Sun: Facts, size, and fate of Earth’s blazing star
WebOct 18, 2023 · Our Sun is a middle-aged star, approximately 4.6 billion years old. It formed from the gravitational collapse of a region within a large molecular cloud primarily composed of hydrogen and helium.
Earth's sun: Facts about the sun's age, size and history | Space
WebJun 9, 2021 · Read about the history and future of Earth’s sun as well as fun facts about the sun’s age, size, temperature, and phenomena like solar flares.
Sun - Wikiwand
WebThe Sun is the star at the center of the Solar System. It is a massive, hot ball of plasma, inflated and heated by energy produced by nuclear fusion reactions at its core. Part of this energy is emitted from its surface as visible light, ultraviolet, and infrared radiation, providing most of the energy for life on Earth.
Our solar system: The sun information and facts - National …
WebSep 15, 2018 · At about 864,000 miles (1.4 million kilometers) wide, the sun is 109 times wider than Earth, and it accounts for more than 99.8 percent of the solar system's total mass. If it was a hollow ball ...
Sun: Facts - NASA Science
WebOur Sun is a 4.5 billion-year-old yellow dwarf star – a hot glowing ball of hydrogen and helium – at the center of our solar system. It’s about 93 million miles (150 million kilometers) from Earth and it’s our solar system’s only star. Without the Sun’s energy, life as we know it could not exist on our home planet.
Sun - Wikiwand
WebThe Sun is the star at the center of the Solar System. It is a nearly perfect ball of hot plasma, heated to incandescence by nuclear fusion reactions in its core. The Sun radiates this energy mainly as light, ultraviolet, and infrared radiation, and is the most important source of energy for life on Earth. Sun.
Sun | Definition, Composition, Properties, Temperature, & Facts
Web4 days ago · Sun, star around which Earth and the other components of the solar system revolve. It is the dominant body of the system, constituting more than 99 percent of its entire mass. The Sun is the source of an enormous amount of energy , a portion of which provides Earth with the light and heat necessary to support life .
Sun - NASA Science
WebOverview. The Sun's gravity holds the solar system together, keeping everything – from the biggest planets to the smallest particles of debris – in its orbit. The connection and interactions between the Sun and Earth drive the seasons, ocean currents, weather, climate, radiation belts and auroras.
Position of the Sun - Wikipedia
WebThe position of the Sun in the sky is a function of both the time and the geographic location of observation on Earth's surface. As Earth orbits the Sun over the course of a year, the Sun appears to move with respect to the fixed stars on the celestial sphere, along a circular path called the ecliptic.
The sun: Facts about the bright star at the center of the solar …
WebMar 16, 2022 · Bibliography. The sun is a yellow dwarf star in the center of the solar system, and it is the largest, brightest and most massive object in the system. The sun formed around 4.5 billion years...
Sun summary | Britannica
WebSun, Star around which the components of the solar system revolve. It is about 4.6 billion years old and is the dominant body of the system, with more than 99% of its mass. It converts about 4.5 million tons of matter into energy every second by nuclear fusion reactions in its core, producing neutrinos and solar radiation.
Solar System - Wikipedia
WebThe Sun is an ordinary main sequence star that maintains a balanced equilibrium by the fusion of hydrogen into helium at its core, releasing this energy from its outer photosphere. The largest objects that orbit the Sun are the eight planets.
The Sun | Natural History Museum
WebExplore facts about the Sun, the star at the centre of our solar system. Discover how big and hot it is, what it's made of and what sunspots and solar flares are. Plus, what is the future for the Sun - will it explode?
In Depth | Sun – NASA Solar System Exploration
WebThe Sun is a 4.5 billion-year-old yellow dwarf star – a hot glowing ball of hydrogen and helium – at the center of our solar system. It’s about 93 million miles (150 million kilometers) from Earth and it’s our solar system’s only star. Without the Sun’s energy, life as we know it could not exist on our home planet.
All About the Sun | NASA Space Place – NASA Science for Kids
WebMay 6, 2024 · The Sun contains almost ALL of the material in our solar system. 99% of it. All the planets, asteroids and comets add up to less than 1% of the total. The Sun is so far away that it takes light about 8 minutes and 20 seconds for it to get to us – and light is the fastest thing in the universe.
Sun - Evolution, Structure, Radiation | Britannica
WebThe Sun has been shining for 4.6 billion years. Considerable hydrogen has been converted to helium in the core, where the burning is most rapid. The helium remains there, where it absorbs radiation more readily than hydrogen. This raises the central temperature and increases the brightness.
Sun - Wikipedia, the free encyclopedia - Wikinews
WebJun 8, 2022 · The Sun is the star at the center of the Solar System. It is a nearly perfect ball of hot plasma, 18 19 heated to incandescence by nuclear fusion reactions in its core. The Sun radiates this energy mainly as light, ultraviolet, and infrared radiation, and is the most important source of energy for life on Earth .
Formation and evolution of the Solar System - Wikipedia
WebSun begins to ascend the red-giant branch of the Hertzsprung–Russell diagram, growing dramatically more luminous (by a factor of up to 2,700), larger (by a factor of up to 250 in radius), and cooler (down to 2600 K): Sun is now a red giant. Mercury, Venus and possibly Earth are swallowed.
Sunlight - Wikipedia
WebSunlight takes about 8.3 minutes to reach Earth from the surface of the Sun. A photon starting at the center of the Sun and changing direction every time it encounters a charged particle would take between 10,000 and 170,000 years to get to the surface.
The Sun in culture - Wikipedia
WebDepiction of the Sun with rays and with a face, a Western iconographic tradition which became current in the Early Modern period (ceiling of the Golden Cross Tavern, Linlithgow, c. 1700) The Sun , as the source of energy and light for life on Earth, has been a central object in culture and religion since prehistory.
Sun dog - Wikipedia
WebA sun dog (or sundog) or mock sun, also called a parhelion [1] (plural parhelia) in meteorology, is an atmospheric optical phenomenon that consists of a bright spot to one or both sides of the Sun. Two sun dogs often flank the Sun within a 22° halo . The sun dog is a member of the family of halos caused by the refraction of sunlight by ice ...
Sun Microsystems - Wikipedia
WebSun Microsystems, Inc. (Sun for short) was an American technology company that sold computers, computer components, software, and information technology services and created the Java programming language, the Solaris operating system, ZFS, the Network File System (NFS), and SPARC microprocessors.Sun contributed significantly to the …
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