Protik Sikder at 05:30, 9 January 2025

2025-01-09T05:30:10Z

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			{{SHORTDESC:The Sun, its planets and their moons}}
	[[File:Solar system.jpg\|thumb\|Illustration of the Solar System showing the Sun, planets, and their orbits.]]		[[File:Solar system.jpg\|thumb\|Illustration of the Solar System showing the Sun, planets, and their orbits.]]
	The '''Solar System''' consists of the [[Sun]] and all celestial objects bound to it by gravity. These include eight [[planet]]s, their moons, dwarf planets, asteroids, comets, meteoroids, and interplanetary dust.<ref>{{Cite book \|title=The Solar System \|author=Chaisson, E., and McMillan, S. \|year=2022 \|publisher=Pearson Education \|isbn=978-0134591289}}</ref> The Solar System is located in the [[Milky Way]] galaxy, within the Orion Arm.<ref>{{Cite web \|title=Solar System Exploration \|url=https://solarsystem.nasa.gov/ \|publisher=NASA \|access-date=2025-01-09}}</ref>		The '''Solar System''' consists of the [[Sun]] and all celestial objects bound to it by gravity. These include eight [[planet]]s, their moons, dwarf planets, asteroids, comets, meteoroids, and interplanetary dust.<ref>{{Cite book \|title=The Solar System \|author=Chaisson, E., and McMillan, S. \|year=2022 \|publisher=Pearson Education \|isbn=978-0134591289}}</ref> The Solar System is located in the [[Milky Way]] galaxy, within the Orion Arm.<ref>{{Cite web \|title=Solar System Exploration \|url=https://solarsystem.nasa.gov/ \|publisher=NASA \|access-date=2025-01-09}}</ref>

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[[File:Solar system.jpg|thumb|Illustration of the Solar System showing the Sun, planets, and their orbits.]]
The '''Solar System''' consists of the [[Sun]] and all celestial objects bound to it by gravity. These include eight [[planet]]s, their moons, dwarf planets, asteroids, comets, meteoroids, and interplanetary dust.<ref>{{Cite book |title=The Solar System |author=Chaisson, E., and McMillan, S. |year=2022 |publisher=Pearson Education |isbn=978-0134591289}}</ref> The Solar System is located in the [[Milky Way]] galaxy, within the Orion Arm.<ref>{{Cite web |title=Solar System Exploration |url=https://solarsystem.nasa.gov/ |publisher=NASA |access-date=2025-01-09}}</ref>

== Composition ==

=== Sun ===
The [[Sun]] is the central star of the Solar System and accounts for 99.86% of its total mass. It provides light and heat, making life possible on [[Earth]]. The Sun's immense gravitational pull holds the Solar System together. <ref>{{Cite journal |title=The Early Solar System |journal=Nature Astronomy |volume=3 |year=2019 |pages=177-181 |doi=10.1038/s41550-018-0654-4}}</ref>

=== Planets ===
The Solar System has eight recognized planets, divided into two categories:
* '''Terrestrial planets''': [[Mercury (planet)|Mercury]], [[Venus (planet)|Venus]], [[Earth]], and [[Mars (planet)|Mars]]. These are rocky planets with solid surfaces.
* '''Gas giants''': [[Jupiter (planet)|Jupiter]] and [[Saturn (planet)|Saturn]]. These are massive planets primarily composed of hydrogen and helium.
* '''Ice giants''': [[Uranus (planet)|Uranus]] and [[Neptune (planet)|Neptune]]. These planets have thick atmospheres of methane, water, and ammonia.

=== Dwarf Planets ===
The Solar System contains several dwarf planets, including:
* [[Pluto]]
* [[Ceres (dwarf planet)|Ceres]]
* [[Eris (dwarf planet)|Eris]]
* [[Haumea]]
* [[Makemake]]

=== Small Solar System Bodies ===
In addition to planets and dwarf planets, the Solar System includes:
* [[Asteroid]]s: Mostly found in the [[Asteroid Belt]] between Mars and Jupiter.
* [[Comet]]s: Icy objects that develop tails when they approach the Sun.
* [[Meteoroid]]s: Small rocky or metallic objects that sometimes enter Earth's atmosphere as [[meteor]]s.

== Structure and Organization ==

The Solar System is organized into several regions:
* '''Inner Solar System''': Includes the Sun, terrestrial planets, and the asteroid belt.
* '''Outer Solar System''': Contains the gas and ice giants.
* '''Kuiper Belt''': A region of icy bodies beyond Neptune, including Pluto.
* '''Oort Cloud''': A hypothetical distant sphere of icy objects surrounding the Solar System.

== Formation ==

The Solar System formed approximately {{formatnum:4600}} million years ago from a molecular cloud of gas and dust. A rotating disk of material collapsed under gravity, forming the Sun at its center. The remaining material coalesced to form planets, moons, and other celestial objects. This process is known as the [[nebular hypothesis]].

== Importance ==
The Solar System provides a framework for studying planetary science, astronomy, and the potential for life beyond Earth. Understanding its dynamics helps scientists explore the origins of the universe and Earth's place in it.
== External Links ==
* [https://solarsystem.nasa.gov/ NASA Solar System Exploration]
* [https://spaceplace.nasa.gov/solar-system/en/ NASA Space Place: The Solar System]
* [https://www.esa.int/Science_Exploration/Space_Science/Solar_System European Space Agency - Solar System]
== References ==
[[Category:Solar System]]
[[Category:Astronomy]]
[[Category:Planets]]

Solar System - Revision history

Protik Sikder at 05:30, 9 January 2025