Protik Sikder at 05:26, 9 January 2025

2025-01-09T05:26:41Z

← Older revision		Revision as of 11:26, 9 January 2025
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			{{SHORTDESC:Star at the centre of the Solar System}}
	[[File:Sun poster.svg\|thumb\|The Sun, as seen from Earth, is the source of light and energy for the Solar System.]]		[[File:Sun poster.svg\|thumb\|The Sun, as seen from Earth, is the source of light and energy for the Solar System.]]
	The '''Sun''' is the star at the center of the [[Solar System]]. It is a nearly perfect sphere of hot plasma and the primary source of energy for life on Earth. The Sun's gravity holds the Solar System together, keeping planets, asteroids, comets, and other celestial objects in orbit.		The '''Sun''' is the star at the center of the [[Solar System]]. It is a nearly perfect sphere of hot plasma and the primary source of energy for life on Earth. The Sun's gravity holds the Solar System together, keeping planets, asteroids, comets, and other celestial objects in orbit.

	== Characteristics ==		== Characteristics ==
	The Sun is classified as a [[G-type main-sequence star (G dwarf)]], often referred to as a yellow dwarf. It is approximately 4.6 billion years old and is expected to continue as a main-sequence star for about another 5 billion years.		The Sun is classified as a [[G-type main-sequence star (G dwarf)]], often referred to as a yellow dwarf. It is approximately 4.6 billion years old and is expected to continue as a main-sequence star for about another 5 billion years.

Blossom: Created page with "The Sun, as seen from Earth, is the source of light and energy for the Solar System. The '''Sun''' is the star at the center of the Solar System. It is a nearly perfect sphere of hot plasma and the primary source of energy for life on Earth. The Sun's gravity holds the Solar System together, keeping planets, asteroids, comets, and other celestial objects in orbit. == Characteristics == The Sun is classified as a G-type main-sequence st..."

2025-01-09T05:13:40Z

Created page with "thumb|The Sun, as seen from Earth, is the source of light and energy for the Solar System. The '''Sun''' is the star at the center of the Solar System. It is a nearly perfect sphere of hot plasma and the primary source of energy for life on Earth. The Sun's gravity holds the Solar System together, keeping planets, asteroids, comets, and other celestial objects in orbit. == Characteristics == The Sun is classified as a G-type main-sequence st..."

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[[File:Sun poster.svg|thumb|The Sun, as seen from Earth, is the source of light and energy for the Solar System.]]
The '''Sun''' is the star at the center of the [[Solar System]]. It is a nearly perfect sphere of hot plasma and the primary source of energy for life on Earth. The Sun's gravity holds the Solar System together, keeping planets, asteroids, comets, and other celestial objects in orbit.
== Characteristics ==
The Sun is classified as a [[G-type main-sequence star (G dwarf)]], often referred to as a yellow dwarf. It is approximately 4.6 billion years old and is expected to continue as a main-sequence star for about another 5 billion years.
* '''Mass''': {{formatnum:1.989e30}} kilograms (about 333,000 times the mass of Earth) <ref>{{Cite web |title=Sun Fact Sheet |url=https://nssdc.gsfc.nasa.gov/planetary/factsheet/sunfact.html |publisher=NASA |access-date=2025-01-09}}</ref>
* '''Diameter''': About 1.39 million kilometers (109 times that of Earth) <ref>{{Cite journal |title=The Physical Properties of the Sun |journal=Annual Review of Astronomy and Astrophysics |year=2022 |author=Priest, E. |volume=60 |pages=485–515}}</ref>
* '''Surface Temperature''': Approximately 5,500 degrees Celsius (9,932 degrees Fahrenheit) <ref>{{Cite book |title=Astrophysics for Physicists |author=Choudhuri, A.R. |year=2010 |publisher=Cambridge University Press |isbn=978-0521815536}}</ref>
== Structure ==
The Sun's structure consists of several layers:
* '''Core''': The innermost layer where nuclear fusion occurs, producing the Sun's energy.
* '''Radiative Zone''': The region where energy is transported outward via radiation.
* '''Convective Zone''': The outer layer where energy is transported by convection.
* '''Photosphere''': The visible surface of the Sun.
* '''Chromosphere''': A thin layer of the Sun's atmosphere above the photosphere.
* '''Corona''': The outermost part of the Sun's atmosphere, visible during a solar eclipse.
== Energy Production ==
The Sun generates energy through [[nuclear fusion]] in its core. Hydrogen nuclei fuse to form helium, releasing enormous amounts of energy in the process. This energy travels outward and eventually reaches Earth as sunlight, which supports life and drives the planet's climate systems.
== Importance to Earth ==
The Sun is vital for life on Earth, providing the light and heat necessary for biological processes, such as photosynthesis. Its gravitational influence keeps Earth in orbit, ensuring a stable environment for life to evolve.
== References ==
<references />
== External Links ==
* [https://solarsystem.nasa.gov/ NASA Solar System Exploration: The Sun]
* [https://spaceplace.nasa.gov/sun/en/ NASA Space Place: The Sun]
* [https://www.esa.int/Science_Exploration/Space_Science/Sun European Space Agency - The Sun]
[[Category:Stars]]
[[Category:Solar System]]

Sun - Revision history

Protik Sikder at 05:26, 9 January 2025