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...f planetary systems is thought to be a natural result of star formation. A sun-like star usually takes around 100&nbsp;million years to form.<ref name=Mon ...ulties. The main problem was [[angular momentum]] distribution between the Sun and planets. The planets have 99% of the momentum, and this fact could not ...

...e two mechanisms used as aids in astronomy, which showed the motion of the Sun, Moon and five planets. Cicero mentions similar mechanisms designed by [[Th ...oon came then to that position which was its shadow on the Earth, when the Sun was in line.<ref>{{cite web | title = ''De re publica'' 1.xiv §21|author= [ ...

...ther stars are visible in the night sky, when they are not outshone by the Sun. Historically, the most prominent stars on the [[celestial sphere]] were gr | title = How the Sun Shines | publisher = Nobel Foundation ...

...med general relativity's prediction for the deflection of starlight by the Sun,<ref>Cf. {{Harvnb|Kennefick|2005}} and {{Harvnb|Kennefick|2007}}.</ref> mak ...e light of stars or distant [[quasars]] being deflected as it passes the [[Sun]].<ref>Cf. {{Harvnb|Kennefick|2005}} for the classic early measurements by ...

..."Ephemeris Type: ELEMENTS", "Target Body: Neptune Barycenter" and "Center: Sun".</ref><ref name=barycentre>Orbital elements refer to the barycentre of the ...= 1.767975° to [[Ecliptic]]<br />6.43° to [[Ecliptic#Ecliptic_and_planets|Sun’s equator]]<br>0.72° to [[Invariable plane]]<ref name=meanplane>{{cite web ...

...ugh the energetic collision of two nuclei. For example, at the core of the Sun protons require energies of 3–10 keV to overcome their mutual repulsion—the ...1-03 }}</ref> [[Helium]] was discovered in this way in the spectrum of the Sun 23&nbsp;years before it was found on Earth.<ref>{{cite web ...

...is a [[star]] in the [[constellation]] [[Cetus]] that is similar to the [[Sun]] in [[mass]] and [[Stellar classification|spectral type]]. At just under 1 ...Intelligence]] (SETI) searches, given its stability and similarity to the Sun, and it appears in some [[science fiction]] literature. ...

| metal=117<ref name="nras278" /><ref name="mnras267" />/– % Sun ...his is smaller than the orbit of [[Mercury (planet)|Mercury]] around the [[Sun]]. ...

...except Oberon (see below).<ref name=Grundy2006/> Because Uranus orbits the Sun almost on its side, and its moons orbit in the planet's equatorial plane, t ...e of the flyby the southern hemisphere of Oberon was pointed towards the [[Sun]], so the northern (dark) hemisphere could not be studied.<ref name=Smith19 ...

...ollection of atmospheric data would be relegated to times of day where the sun's electromagnetic emissions did not drown out the laser's signal. The addit ...px|A high resolution version of the spectrum and Fraunhofer lines of the [[Sun]]. Each of the 50 slices covers 60 angstroms, for a complete spectrum acros ...

...rus and [[Sirius]], one of the most [[luminosity|luminous]] stars in the [[Sun]]'s neighborhood. ...to be termed, "arguably the next most important star in the sky after the Sun".<ref name=apj429/> Historically, Vega served as the [[North Star|northern] ...

...t|delayed]] by the warping of [[space and time]] (blue lines) due to the [[Sun]]'s mass.]] ...ein predicted the [[Tests of general relativity#Deflection of light by the Sun|gravitational deflection of light]]: in a gravitational field, light is def ...

...ting for the Sun|The Metre<font color=black>"<br />"</font>Waiting for the Sun]] ...the album, like those on "[[The Metre/Waiting for the Sun|Waiting for the Sun]]", were his "most personal and direct yet".<ref name=PCentral39 /> Fanning ...

| metal = 10-32% [[Sun]]<ref name="Gizis">{{cite journal | author = Gizis, John E. | year = 1997| ...hich remains the largest known proper motion of any star relative to the [[Sun]].<ref name="EEB">{{cite journal ...

...ate matter]]. Because a white dwarf's mass is comparable to that of the [[Sun]] and its volume is comparable to that of the [[Earth]], it is very [[densi ...be, very roughly, 1,000,000 times greater than the average density of the Sun, or approximately 10⁶ [[gram]]s (1 [[tonne]]) per [[cubic centim ...

...group of objects that share the orbit of the planet [[Jupiter]] around the Sun. Relative to Jupiter, each Trojan [[Libration|librates]] around one of the ...y]] discovered an [[asteroid]] at the {{L4}} [[Lagrangian point]] of the [[Sun]]&ndash;[[Jupiter]] system, later named [[588 Achilles]].<ref name=Nicholso ...

...f photons within it. An example would be in the [[Solar core|core]] of the sun. Energy can take about a million years to reach the surface;<ref> ...p://books.google.com/books?id=06_9B7S_q_YC&pg=PA16&dq=million-year+surface+sun+photon&as_brr=3&ei=gYsyR6iELpLgtgOkttmvAQ&sig=70D3g1ajnoVyvnoY1qBAIV0yIf4 ...

...weight ratio of iron to [[silicon]] is 0.9:1.3 in Callisto, whereas the [[Sun|solar ratio]] is around 1.8.<ref name=Kuskov2005/> ...

...ang also posited theories about the [[Moon]] and its relationship to the [[Sun]]; specifically, he discussed the Moon's sphericity, its illumination by re ...angdui]]; this funerary banner shows a sliver moon in the top left and the sun in the top right, both with their cosmological representations of the toad ...

...]s are yellow, while Jupiter's are pink. The scattered objects between the Sun and the Kuiper belt are known as [[Centaur (planetoid)|centaurs]]. The scal ...nomical unit|AU]]) to approximately 55 [[Astronomical unit|AU]] from the [[Sun]]. <ref>{{cite journal | url=http://www.iop.org/EJ/article/0004-637X/490/2/ ...