Sun - Wikipedia
The Sun is the star at the center of the Solar System. It is a massive, nearly perfect sphere of hot plasma, heated to incandescence by nuclear fusion reactions in its core, radiating the energy from its surface mainly as visible light and infrared radiation with 10% at ultraviolet energies.
Sun - Simple English Wikipedia, the free encyclopedia
The Sun, also known as Sol, is a star at the center of the solar system. It is a white star that gives off different types of energy such as infrared energy (heat), ultraviolet light , radio waves and light.
Sun | Definition, Composition, Properties, Temperature, & Facts ...
5 天之前 · 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 .
The Sun: Facts, size, and fate of Earth’s blazing star
2023年10月18日 · Facts about our Sun, including its distance from Earth, what the Sun is made of, and how long it would take to drive there (hint: a long time!).
Our solar system: The sun information and facts - National …
2018年9月15日 · It holds the solar system together; provides life-giving light, heat, and energy to Earth; and generates space weather. The sun resides some 26,000 light-years from the Milky Way's center, in a...
Our Sun: Facts - Science@NASA
Our 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 …
Solar System - Wikipedia
The Sun is a typical star that maintains a balanced equilibrium by the fusion of hydrogen into helium at its core, releasing this energy from its outer photosphere. Astronomers classify it as a G-type main-sequence star. The largest objects that orbit the Sun are the eight planets.
The Sun - Science@NASA
The Sun. The Sun is the star at the heart of our solar system. Its gravity holds the solar system together, keeping everything — from the biggest planets to the smallest bits of debris — in its orbit.
The Sun - Natural History Museum
Explore 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?
Anatomy of the Sun - NASA
2013年1月23日 · Image of the Sun with cut-away portion showing the solar interior with text descriptions of the regions.