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The 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.
- Simple English
The Sun, also known as Sol, is a star at the center of the...
- Stellar Evolution
Schematic of stellar evolution. Stellar evolution starts...
- Planetary Nebula
X-ray/optical composite image of the Cat's Eye Nebula (NGC...
- Plasma
Plasma (from Ancient Greek πλάσμα (plásma) 'moldable...
- Solar System
The Solar System is the gravitationally bound system of the...
- Sungazing
Sungazing is the unsafe practice of looking directly at the...
- Talk
Sun is a featured article; it (or a previous version of it)...
- Incandescence
Hot metal work glows with visible light. This thermal...
- Black Dwarf
Diagram of stellar evolution, showing the various stages of...
- Simple English
Sep 19, 2023 · Sun. From Wikimedia Commons, the free media repository. This is a gallery page containing specially selected image and media files. They have been chosen as highlights of a particular topic, but do not represent the full range of files that are available on Commons.
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Sep 11, 2023 · For other uses, see Category:Sun (disambiguation). Subcategories. This category has the following 40 subcategories, out of 40 total. Sun by color (14 C) Sun by date (4 C) Sun by medium (2 C) Sun by spectral line (3 C) ! Featured pictures of the Sun (3 C, 3 F) A. Sun in art (52 C, 437 F) Sun in astrology (1 C, 25 F) C.
- Composition. The sun is made up of a blazing combination of gases. These gases are actually in the form of plasma. Plasma is a state of matter similar to gas, but with most of the particles ionized.
- Electromagnetic Radiation. The sun’s energy travels to Earth at the speed of light in the form of electromagnetic radiation (EMR). The electromagnetic spectrumexists as waves of different frequencies and wavelengths.
- Evolution of the Sun. The sun, although it has sustained all life on our planet, will not shine forever. The sun has already existed for about 4.5 billion years.
- Sun’s Structure. The sun is made up of six layers: core, radiative zone, convective zone, photosphere, chromosphere, and corona. Core. The sun’s core, more than a thousand times the size of Earth and more than 10 times denserthan lead, is a huge furnace.
Jan 22, 2013 · The sun and its atmosphere consist of several zones or layers. From the inside out, the solar interior consists of: the Core (the central region where nuclear reactions consume hydrogen to form helium. These reactions release the energy that ultimately leaves the surface as visible light. ), the Radiative Zone (extends outward from the outer ...
Mar 11, 2021 · Check out some pictures of our Sun in the NASA Solar System Exploration Sun gallery. article last updated March 11, 2021.