Cosma / Communication / Knowledge / Realm / Physical / Universe / Solar System / Sun
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Introduction1
EZ Science (NASA, YouTube Channel)
EZ Science (EZ Science, Official Website)
Dictionary
Sun : (1) the luminous celestial body around which the earth and other planets revolve, from which they receive heat and light, which is composed mainly of hydrogen and helium, and which has a mean distance from earth of about 93,000,000 miles (150,000,000 kilometers), a linear diameter of 864,000 miles (1,390,000 kilometers), and a mass 332,000 times greater than earth (2) a celestial body like the Sun — Merriam-Webster See also OneLook
Thesaurus
Roget’s II (Thesaurus.com), Merriam-Webster Thesaurus, Visuwords
Encyclopedia
The 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, radiating the energy mainly as visible light, ultraviolet, and infrared radiation. It is the most important source of energy for life on Earth. The Sun’s diameter is about 1.39 million kilometers (864,000 miles), or 109 times that of Earth. Its mass is about 330,000 times that of Earth, comprising about 99.86% of the total mass of the Solar System. Roughly three-quarters of the Sun’s mass consists of hydrogen (~73%); the rest is mostly helium (~25%), with much smaller quantities of heavier elements, including oxygen, carbon, neon, and iron.
The Sun is a G-type main-sequence star (G2V). As such, it is informally, and not completely accurately, referred to as a yellow dwarf (its light is closer to white than yellow). It formed approximately 4.6 billion years ago from the gravitational collapse of matter within a region of a large molecular cloud. Most of this matter gathered in the center, whereas the rest flattened into an orbiting disk that became the Solar System. The central mass became so hot and dense that it eventually initiated nuclear fusion in its core. It is thought that almost all stars form by this process. — Wikipedia
Sun (COSMOS: The SAO Encyclopedia of Astronomy)
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Inspiration
Talks about the Sun (TED: Ideas Worth Spreading)
Articles about the Sun (Big Think)
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Adventures
Explore related posts on Cosma …
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Innovation
Science
Living With a Star Program (NASA)
Solar System Exploration: Sun (NASA Science)
Sun (NASA Science)
The Sun (NASA)
The Sun, Our Solar System’s Star (Planetary Society)
Our Sun (Lunar & Planetary Institute)
The Life-Giving Sun (Introduction to Astronomy, Wolfgang H. Berger, UC San Diego)
Sun (Eric Weisstein’s World of Astronomy, Wolfram Research)
Solar Atmosphere (Eric Weisstein’s World of Astronomy, Wolfram Research)
Sun (Wolfram Alpha)
Space Weather (Wolfram Alpha)
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Preservation
History
History of Observation of the Sun (Encyclopædia Britannica)
Voyages to the Sun (Steven J. Dick, NASA’s Chief Historian)
Sun (World History Encyclopedia)
Library
DDC: 523.7 The Sun (Library Thing)
Subject: Sun (Library Thing)
LCC: QB 520 The Sun (UPenn Online Books)
LCC: QB 520 The Sun (Library of Congress)
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Participation
Education
Why Does the Sun Burn Us? (Space Place, NASA)
The Sun (Science Trek)
Sun (Cosmos4Kids)
MERLOT: Multimedia Educational Resource for Learning and Online Teaching
OER Commons: Open Educational Resources
Community
Organization
Solar Section (British Astronomical Association)
News
Sun (NASA Science)
Solar Phyiscs (JSTOR)
Solar Physics (NPR Archives)
Sun (Astronomy Magazine)
Government
Space Weather Prediction Center (NOAA)
Document
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Related
Here are links to pages about closely related subjects.
“Fundamentals”
Law (Constant) Relativity
Force Gravity, Electromagnetism (Light, Color)
Matter (Microscope) Molecule, Atom (Periodic Table), Particle
“Space”
Universe (Astronomical Instrument)
Galaxy Milky Way, Andromeda
Planetary System Star, Brown Dwarf, Planet, Moon
Our Neighborhood
Solar System Sun
Terrestrial Planet Mercury, Venus, Earth (Moon), Mars
Asteroid Belt Ceres, Vesta
Jovian Planet Jupiter, Saturn, Uranus, Neptune
Trans-Neptunian Object
Kuiper Belt Pluto, Haumea, Makemake
Scattered Disc Eris, Sedna, Planet X
Oort Cloud Etc. Scholz’s Star
Small Body Comet, Centaur, Asteroid
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Notes
1. The resources on this page are are organized by a classification scheme developed exclusively for Cosma.