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This article details a subject that is considered canon.
This article covers the Canon version of this subject. Click here for Wookieepedia's article on the Legends version of this subject. 

OnACanonArticleGoToLegends

"When the night it is… is the sungone?"
"I mean… of course it's not."
"Of course. Obvious, it is."
―Yoda uses a sun as an allegory for the Force to Luke Skywalker[1]
 being drained to power the  .

A star being drained to power theStarkiller Basesuperweapon.

Stars were massive, glowing, spheres ofplasma andgas that produced their own light and energy. Stars that were the central body of aplanetary system were referred to assuns.

Description[]

"I belong to the stars."
"You're owned by giant balls of exploding gas?"
"Okay... Maybe I'm over-romanticizing it a bit.
"
Poe Dameron and Karé Kun[2]
The star

The starKessa

Stars were large celestial bodies that generated heat, light andradiation and consisted[3] of a core ofhelium andhydrogengas burning inplasma form. Due to the high temperatures, the star underwentnuclearfusion, creating a temperature of around 5,500 degrees on its inner surface, known as the "photosphere". Surrounding the photosphere was the "chromosphere", a cooler, gaseous layer which gave the star its particularcolor. At the edge of a star's surface was thecorona, comprised of rarefied gas.[4]

During theHigh Republic Era, stars were assigned to a specific class by their chemical properties, such asR-class stars being unusuallynitrogen-heavy.[5] Ahuman's skin could darken from sun exposure;SergeantTonra usually had a pale complexion, but after spending two weeks in the sun, his skin reddened significantly. Human infants needed to be protected from the sun; whenSola Naberrie was preparing to spend the day outdoors with her newborn babyRyoo, she needed to get Ryoo's sun protection first.[6]Plants also drew sustenance from sunlight.[7]

Types of stars[]

There were seven types ofmain sequence stars in the galaxy:[4]

  • "O" stars were blue, and had a lifespan of less than one million years. Example:Garnib.[4]
  • "B" stars were blue-white, and had a lifespan of ten million years. Example:Kessa.[4]
  • "A" stars were white, and had a lifespan of four hundred million to two billion years. Example:Colu.[4]
  • "F" stars were yellow-white, and had a lifespan of four billion years. Example:Ropagi.[4]
  • "G" stars were yellow, and had a lifespan of ten billion years. Example:Corell.[4]
  • "K" stars were orange, and had a lifespan of sixty billion years. Example:Yavin.[4]
  • "M" stars were red and emitted little light or heat. They had a lifespan of over one hundred trillion years. They were also calledred dwarfs. Example:Barab.[4]

With O-class stars being the biggest in the sequence, the size decreased gradually to the smallest M-class stars.[4]

Thenon-main sequence stars include:[4]

Pre-main sequence (smaller than M-class stars):[4]

Post main-sequence (bigger than O-class stars):[4]

Compact stars:[4]

Other exotic star types existed that did not fit precisely into this system of classification. These includedAsar, considered ablue dwarf,[8] andyellow dwarfs.[9]

Life cycle[]

Birth[]

Stars formed in areas ofspace known asstellar nurseries,[10] through a collision of energies in the form of pressure and heat, a process which shaped the space around it and could be seen from millions ofkilometers away.[11] The collapse of anebula[4] or the ignition of aplanet's core by an outside force could also result in the formation of a star.[12]Chirrut Îmwe once remarked that the "strongest stars" hadkyber at their center.[13] During their formation, which took millions of years, stars were identified as eitherprotostars orbrown dwarfs, the latter being too small to maintain a hydrogen fusion reaction and died out.[4]

Stars and planets[]

A field of stars

A field of stars

"There are so many! Do they all have a system of planets?"
"Most of them."
Anakin Skywalker andJedi MasterQui-Gon Jinn, looking at the stars[14]

After reaching their full size, stars often started expelling clouds of gas and dust, which formed into a set of planets[4] and other bodies.[14] In that case, the stars were referred to as suns. A sun, together with all the bodies bound to it, formed aplanetary system. In some cases, a planetary system could contain several suns, as was the case around the planets ofTatooine[15] andMon Cala.[16] Life could not exist without stars.[17]

A planet revolving around a star normally received light and warmth from it,[9] although there were exceptions.Umbara was known as the "Shadow World" because the rays of its sun never completely reached the planet's surface, keeping it in perpetual darkness.[18] In the night sky, remote stars looked like mere points of light.[14] By convention, those points of light were grouped intoconstellations.[19] Without a star, most worlds would become lifeless and frozen. The size and distance of a sun would affect many of the features of a planet orbiting it.[20]

On theplanetCoruscant, stars were hard to see, due to all thecity lights of the sprawlingecumenopolis. However, according to youngObi-Wan Kenobi, one could see them if they knew how to look. Stars could be used for navigation: When young Kenobi returned to theJedi Temple after trying to help fellowJedi InitiateGehren Rand, who had run away, he used the stars to find his way home.[21]

Death[]

After passing through the main sequence, the fusion reactions inside a star slowly stopped and they expanded in size, turning intoblue orred giants. Immediately before the fusion reactions completely stopped, the stars turned intored supergiants, which soon collapsed in on themselves in an explosion known as asupernova. Exploding stars then turned into either a highlyradioactiveneutron star or, of the star was particularly large, a singularity inside ablack hole. Small to medium-sized stars turned intowhite dwarfs, which after billions of years died out intoblack dwarfs.[4]

Stars in culture[]

"The strongest stars have hearts of kyber."
Chirrut Îmwe[13]

Resistance memberKaré Kun once referred to stars as "giant balls of exploding gas."[2]Prime MinisterDreand Yens once remarked that stars only twinkled in the sky because they were burning to stay alive, which he believed was proof that nature's beauty came from function.[22] TheKhepi worshiped stars.[23]

Appearances[]

Wiki-shrinkable Thisin-universe list is incomplete. You can help Wookieepedia byexpanding it.

Non-canon appearances[]

Wiki-shrinkable Thisin-universe list is incomplete. You can help Wookieepedia byexpanding it.

Sources[]

Notes and references[]

  1. Star Wars (2020) 35
  2. 2.02.1Age of Resistance - Poe Dameron 1
  3. Star Wars: Absolutely Everything You Need to Know
  4. 4.004.014.024.034.044.054.064.074.084.094.104.114.124.134.144.154.164.174.184.194.204.214.224.234.244.254.26Star Wars: Build the Millennium Falcon 34Guide to the Galaxy: Types of Stars
  5. The High Republic: Light of the Jedi
  6. Queen's Shadow
  7. Star Wars: The Rise of Skywalker: The Visual Dictionary
  8. Nexus of Power
  9. 9.09.1Bloodline
  10. Star Wars: Aliens of the Galaxy
  11. A New Hope: The Princess, the Scoundrel, and the Farm Boy
  12. Star Wars: The Force Awakens novelization
  13. 13.013.1Rogue One: A Star Wars Story
  14. 14.014.114.2Star Wars: Episode IThe Phantom Menace
  15. StarWars-DatabankII Tatooine in theDatabank(backup link)
  16. StarWars-DatabankII Mon Cala in theDatabank(backup link)
  17. SWInsider "Forces of Nature: The Wild Spaces and Wilder Creatures of theStar Wars Galaxy" —Star Wars Insider 216
  18. StarWars-DatabankII Umbara in theDatabank(backup link)
  19. Ezra's Duel with Danger
  20. Star Wars: The Visual Encyclopedia
  21. Obi-Wan 1
  22. The Princess and the Scoundrel
  23. Star Wars Outlaws(A Pirate's FortuneDLC)

External links[]

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