Siteadmin, Check users, Administrators
12,071
edits
Changes
Jump to navigation
Jump to search
Line 1:
Line 1: − + Line 25:
Line 25: + + + + − + Line 37:
Line 41: − + Line 91:
Line 95: + + + + +
no edit summary
{{Planet
{{Planet
|image=Moooghj.jpg
|image=Moooghj.jpg
|caption=The Sun. (The small blue dot on the upper-right corner is Earth.)
|caption=Sun, the small blue dot on the upper-right corner is Earth.
|primary=Galaxy
|primary=Galaxy
|periapsis=27,600 ly<ref name=Trapp>Trapp, Andrew. "[http://www.geocities.com/dreamer-71/timescales.html Timescales in Open, Flat, and Very Large Closed Universes]." ''From Now Until the End of Time...'' Accessed January 17, 2008.</ref>
|periapsis=27,600 ly<ref name=Trapp>Trapp, Andrew. "[http://www.geocities.com/dreamer-71/timescales.html Timescales in Open, Flat, and Very Large Closed Universes]." ''From Now Until the End of Time...'' Accessed January 17, 2008.</ref>
|composition=92.1% [[hydrogen]], 7.8% [[helium]]<ref name=SunFact/>
|composition=92.1% [[hydrogen]], 7.8% [[helium]]<ref name=SunFact/>
|color=Yellow-orange
|color=Yellow-orange
|pmdm=3.5 * 10<sup>29</sup><ref name=Humphreys>Humphreys, D. R. "[http://www.creationresearch.org/crsq/articles/21/21_3/21_3.html The Creation of Planetary Magnetic Fields]." ''Creation Research Society Quarterly'' 21(3), December 1984. Accessed April 29, 2008.</ref><ref name=est>Estimated</ref>
|cmdm=4.65 * 10<sup>29</sup><ref name=Humphreys/>
|mdt=19000 a<ref name=Humphreys/>
|mhl=13170 a<ref name=calc/>
}}The '''sun''' or [[Sol]] (either from the Greek, ''helios'' or from the [[Latin]] word ''sol'') is a [[yellow dwarf]] [[star]] of [[spectral type]] [[G2V]]. The eight [[planet]]s, including Earth, orbit the sun, as do countless other small objects.<ref name=Britannica/>
}}The '''sun''' or [[Sol]] (either from the Greek, ''helios'' or from the [[Latin]] word ''sol'') is a [[yellow dwarf]] [[star]] of [[spectral type]] [[G2V]]. The eight [[planet]]s, including Earth, orbit the sun, as do countless other small objects.<ref name=Britannica/>
== Nomenclature ==
== Nomenclature ==
The sun a classified as spectral class G2 V. The "G" means it is a moderately warm yellow star. The "2" means it is in the third hottest group of stars within type "G" (the scale runs from 0 to 9). The "V" is actually a Roman numeral for 5 and indicates the sun's size. A size V star is classed as a dwarf, main sequence star. Thus the sun is a moderately warm, yellow, dwarf main sequence star. The Sun is in the 95th percentile in its class by size and mass of other stars in its immediate region.<ref name=Britannica/>
The G2 class is the the second level of hottest stars within the yellow G class. A "V" star in this class is a yellow dwarf star--but the Sun is in fact in the 95th percentile in its class by size and mass of other stars in its immediate region.<ref name=Britannica/>
== History ==
== History ==
=== Mythological ===
=== Mythological ===
In contrast, virtually every other civilization has regarded the Sun as one of many gods. The Egyptians called the Sun '''Ra''' or '''Re''', a deity whom, they said, created the world.<ref name=touregypt>Dunn, Jimmy. "[http://www.touregypt.net/featurestories/re.htm Re (Ra) and Re-Horakhty]." <http://www.touregypt.net/>. Accessed March 5, 2008.</ref> The Egyptians also called the sun-disk '''Aten''', and for a brief period (during the reign of [[Pharaoh]] [[Amenhotep IV]] or '''Akhenaten'''), actually worshipped Aten as the one and only god of the universe.<ref name=touregypt2>Dunn, Jimmy. "[http://www.touregypt.net/featurestories/aten.htm The Egyptian God Aten Before and After Akhenaten]." <http://www.touregypt.net/>. Accessed March 5, 2008.</ref> In [[Babylonia]] and [[Assyria]] the sun was called '''Shamash''', a god who, because he could see everything happening on earth, was also associated with truth and justice.<ref name=MacKenzie>MacKenzie, Donald A. "[http://www.sacred-texts.com/ane/mba/mba17.htm Chapter XI: The Golden Age of Babylonia]." ''Myths of Babylonia and Assyria'', IndyPublish.com (ISBN 1421962977), December 30, 2005, pp. 240-259. Accessed March 5, 2008, at <http://www.sacred-texts.com/></ref> The Greeks at first regarded ''Helios'' as a son of heaven and earth but later came to associate the Sun with their god of truth, '''Apollo'''. According to the [[Apache Creation Story]], [[Creator]], the One Who Lives Above, created the sun by singing it into existence after he had created the Girl-Without-Parents.<ref>Welker, Glenn. "[http://www.indians.org/welker/creation.htm Apache Creation Story]" <Indians.org>, August 12, 2004. Accessed March 6, 2008.</ref> According to Hindu mythology, the sun is worshiped as '''[[Surya]]''', one of the major deities.
In contrast, virtually every other civilization has regarded the Sun as one of many gods. The Egyptians called the Sun '''Ra''' or '''Re''', a deity whom, they said, created the world.<ref name=touregypt>Dunn, Jimmy. "[http://www.touregypt.net/featurestories/re.htm Re (Ra) and Re-Horakhty]." <http://www.touregypt.net/>. Accessed March 5, 2008.</ref> The Egyptians also called the sun-disk '''Aten''', and for a brief period (during the reign of [[Pharaoh]] [[Amenhotep IV]] or '''Akhenaten'''), actually worshipped Aten as the one and only god of the universe.<ref name=touregypt2>Dunn, Jimmy. "[http://www.touregypt.net/featurestories/aten.htm The Egyptian God Aten Before and After Akhenaten]." <http://www.touregypt.net/>. Accessed March 5, 2008.</ref> In [[Babylonia]] and [[Assyria]] the sun was called '''Shamash''', a god who, because he could see everything happening on earth, was also associated with truth and justice.<ref name=MacKenzie>MacKenzie, Donald A. "[http://www.sacred-texts.com/ane/mba/mba17.htm Chapter XI: The Golden Age of Babylonia]." ''Myths of Babylonia and Assyria'', IndyPublish.com (ISBN 1421962977), December 30, 2005, pp. 240-259. Accessed March 5, 2008, at <http://www.sacred-texts.com/></ref> The Greeks at first regarded ''Helios'' as a son of heaven and earth but later came to associate the Sun with their god of truth, '''Apollo'''. According to the [[Apache Creation Story]], [[Creator]], the One Who Lives Above, created the sun by singing it into existence after he had created the Girl-Without-Parents.<ref>Welker, Glenn. "[http://www.indians.org/welker/creation.htm Apache Creation Story]" <Indians.org>, August 12, 2004. Accessed March 6, 2008.</ref>
The most common theme in all the sun-worship cults is the association of the sun with truth and justice personified. The second most common theme is the regarding of the sun as the creator.
The most common theme in all the sun-worship cults is the association of the sun with truth and justice personified. The second most common theme is the regarding of the sun as the creator.
Observations have also shown that the number and location of sunspots come and go in a semi-periodic 9.5 to 11-year solar cycles. At the start of this cycle they are about 30 degrees from the equator. Midway through, the cycle of the number of sunspots observed is maximum, usually about 15 degrees from the equator. Near the end of this on average 10.8-year cycle, the sunspots are very near the equator.<ref name=curious>"[http://curious.astro.cornell.edu/sun.php The Sun]." ''Curious about Astronomy? Ask an Astronomer'', Cornell University, October 18, 2007. Accessed March 5, 2008.</ref><ref name=Maunder>"[http://home.earthlink.net/~ponderthemaunderf/ Factors Affecting Global Temperature]." ''Ponder the Maunder''. Accessed March 5, 2008.</ref>
Observations have also shown that the number and location of sunspots come and go in a semi-periodic 9.5 to 11-year solar cycles. At the start of this cycle they are about 30 degrees from the equator. Midway through, the cycle of the number of sunspots observed is maximum, usually about 15 degrees from the equator. Near the end of this on average 10.8-year cycle, the sunspots are very near the equator.<ref name=curious>"[http://curious.astro.cornell.edu/sun.php The Sun]." ''Curious about Astronomy? Ask an Astronomer'', Cornell University, October 18, 2007. Accessed March 5, 2008.</ref><ref name=Maunder>"[http://home.earthlink.net/~ponderthemaunderf/ Factors Affecting Global Temperature]." ''Ponder the Maunder''. Accessed March 5, 2008.</ref>
=== The solar magnetosphere ===
The magnetosphere oscillates in synchrony with the sunspots in a twenty-two-year cycle. The current amplitude of that cycle is 3.5 * 10<sup>29</sup> N-m-T. This amplitude has been decaying since creation, but relatively slowly, with a half-life of 13,170 Julian years. In fact, according to Humphreys<ref name=Humphreys/>, the sun's magnetic field has lost perhaps 25 percent of its strength since creation.
Measurements of the sun's magnetic dipole moment have not been exact enough to demonstrate whether the amplitude of the field's oscillations is constant or decaying. If those oscillations are in fact decaying, then the Sun cannot be a dynamo.<ref name=Humphreys/>
== Problems for uniformitarian theories posed by the Sun ==
== Problems for uniformitarian theories posed by the Sun ==