Our Sun has inspired mythology in almost all cultures, including ancient Egyptians, Aztecs, Native Americans, and Chinese. We now know that the Sun is a huge, bright sphere of mostly ionized gas, about 4.
, 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.
Sun-Earth Day is a celebration established in 2000 by NASA and ESA. The purpose of the holiday is to popularize the knowledge about the Sun, and the way it influences life on the Earth.
 See also ...
, the solar system's only star
Stars are born. They take shape. They go through a turbulent adolescence, and then they live out their lives in a predictable pattern. Some have companions to provide for.
Related Category: Astronomy: General
intensely hot, self-luminous body of gases at the center of the solar system. Its gravitational attraction maintains the planets, comets, and other bodies of the solar system in their orbits.
The closest star to the Earth and the center of the solar system.
Sun and planets formed from different ingredients
DR EMILY BALDWIN
Posted: 28 June 2011 ...
at HighBeam Research
. Wikimedia Commons (Public Domain) ...
The Sun in Mythology
Creation is often linked to a combination of the Sun (Male) and Moon (Goddess) - representing duality in physical reality.
The , among other things, is the brightest star in the sky. Its irradiance is so high that it's not safe to observe it with naked eyes or an instrument without a proper solar filter. This is very important! Failure… ...
sun spot - Space and Astronomy Definition - Online Dictionary and Glossary ...
high sun - Space and Astronomy Definition - Online Dictionary and Glossary ...
Cepheid Variable - Space and Astronomy Definition - Online Dictionary and G...
Mankind will not remain on Earth forever, but in its quest for light and space will at first timidly penetrate beyond the confines of the atmosphere, and later will conquer for itself all the space near the . - Konstantin E. Tsiolkovsky ...
Enchanted Learning Search
First search engine with spelling correction and pictures! ...
A -synchronous orbit is an interesting orbit. Since the Earth is not an exact sphere (it has a slight bulge at the equator) satellite orbits can be effected by the extra gravitational pull.
The sun's atmosphere consists of the chromosphere, corona, and photosphere. The photosphere is the bright visible surface of the sun, with a surface temperature of 5,800 K.
"The is only a star / around that star we spin" goes the words of a song "Child of the Universe." The is only a star, and an average one at that. It is unimportant in the grand scheme of the universe.
The Sun in the He II emission line.
Credit: SOHO (ESA/NASA)
The Sun is the Earth's dominant source light (and thus heat) and the star about which all of the planets of the solar system orbit. The Sun has mass 1.
The is a star at the center of our solar system. Our is a medium-sized yellow star that is 93,026,700 miles (149,680,000 km) from Earth. Its diameter is 865,121 miles (1,391,980 km).
The sun is a huge, spinning ball of hot gas that glows in the sky. Our sun is a medium sized star. It looks larger and brighter than the other stars because it the nearest star to Earth. It is about 150 million kilometres away.
Our is gorgeous, and dangerous, and amazing. These pictures and videos are more than just beautiful; they are telling us about the mechanisms and processes occurring both on the surface and inside our nearest star.
Wikipedia, the free encyclopedia - Cite This Source
The Sun (Sol) is the star at the center of the Solar System.
Watching Satellite SOHO Regains Ability
Solar and Heliospheric Observatory (SOHO), the -watching satellite, ...
Sun City Palm Desert Astronomy Club
Please contact this organization for information on their astronomy viewing schedules, telescope availability, membership, and public programs.
Sun City Palm Desert Astronomy Club ...
" Observer's Guide" by Pam Spence,159 pp., Firefly Books, 2004. A concise and readable overview. Questions from Users: The color and temperature of stars and of the
*** Questions about the Solar Corona: ...
The Sun's Surface
The deepest layer of the Sun you can see is the photosphere. The word ``photosphere'' means ``light sphere''. It is called the ``surface'' of the Sun because at the top of it, the photons are finally able to escape to space.
Our is a yellow dwarf star. Its official designation is as a G V star. Stars in the this classification have a surface temperatures between 5,300 and 6,000 K and fuse hydrogen into helium to generate their light.
Our Sun's Lost Sibling
By Brian Ventrudo
Like most stars in the Milky Way, our Sun was born in a cluster of hundreds of new stars in a cloud of glowing gas and dust like the Orion Nebula, ...
When we think of stars, we usually neglect the fact that the nearest one is right in our own backyard: the ! ...
Many ancient peoples worshiped the Sun as a god. They thought a solar eclipse meant the god was angry with them. They believed the Sun god's anger could only be calmed with prayer and sacrifice.
The in Time
...is a program designed to integrate science and social studies curricula through a study of Solar Science and Archaeoastronomy.
Our Sun is a normal main-sequence G2 star, one of more than 100 billion stars in our galaxy. diameter: 1,390,000 km. mass: 1.989e30 kg temperature: 5800 K (surface) 15,600,000 K (core) ...
The : An Introduction to the Stars
In this course, Astronomy 124, we will be learning about the contents of the universe, from the relatively small scales of a single star system up to the largest distances known, ...
Sun spots come and go on a regular basis. At times there are very few if any sun spots. Other times there are far more. They generally increase in intensity and then decrease over a period of 11 years. This 11 year cycle is known as the Saros Cycle.
See also: Astro, Earth, Planet, Solar, Orbit