CNO cycle

CNO cycle - set of fusion reactions by which stars convert hydrogen to helium: 4¹H+2e⁻→⁴He+2e⁺+2e⁻+2νₑ+3γ+24.7 MeV→⁴He+2νₑ+3γ+26.7 MeV. Article “CNO cycle” in English Wikipedia has 56.7 points for quality (as of July 1, 2026). The article contains 35 references and 14 sections.

In this language version of Wikipedia the article has the best quality. Also, this article is the most popular in that (English) language version.

In June 2026 the article “CNO cycle” was edited by 3 authors in English Wikipedia and written by 4 authors in all languages.

Since the creation of article “CNO cycle”, its content was written by 177 registered users of English Wikipedia and edited by 817 registered Wikipedia users in all languages.

The article is cited 490 times in English Wikipedia and cited 3378 times in all languages.

The highest Authors Interest rank from 2001:

• Local (English): #807 in January 2002
• Global: #950 in January 2002

The highest popularity rank from 2008:

• Local (English): #98285 in November 2020
• Global: #87531 in April 2008

There are 38 language versions for this article in the WikiRank database (of the considered 55 Wikipedia language editions).

The quality and popularity assessment was based on Wikipédia dumps from July 1, 2026 (including revision history and pageviews for previous years).

The table below shows the language versions of the article with the highest quality.

#	Language	Quality grade	Quality score
1	English (en) CNO cycle		56.7456
2	Greek (el) Κύκλος CNO		47.6248
3	Ukrainian (uk) Вуглецево-азотний цикл		44.6634
4	Tamil (ta) கா.நை.ஆ சுழற்சி		37.9515
5	Vietnamese (vi) Chu trình CNO		36.9374
6	Norwegian (Nynorsk) (nn) CNO-syklusen		32.673
7	Slovak (sk) Uhlíkový cyklus		28.9662
8	Korean (ko) CNO 순환		28.0765
9	Croatian (hr) Niz ugljik-dušik-kisik		27.2116
10	Chinese (zh) 碳氮氧循環		25.9409

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The following table shows the most popular language versions of the article.

The most popular language versions of the article "CNO cycle" in all the time

#	Language	Popularity award	Relative popularity
1	English (en) CNO cycle		1 386 292
2	German (de) CNO-Zyklus		282 001
3	Russian (ru) CNO-цикл		161 077
4	Spanish (es) Ciclo CNO		157 875
5	Italian (it) Ciclo del carbonio-azoto-ossigeno		121 219
6	Japanese (ja) CNOサイクル		113 740
7	French (fr) Cycle carbone-azote-oxygène		108 760
8	Polish (pl) Cykl węglowo-azotowo-tlenowy		96 274
9	Chinese (zh) 碳氮氧循環		79 153
10	Portuguese (pt) Ciclo CNO		77 096

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The following table shows the language versions of the article with the highest popularity in the last month.

The most popular language versions of the article "CNO cycle" in June 2026

#	Language	Popularity award	Relative popularity
1	English (en) CNO cycle		3 952
2	German (de) CNO-Zyklus		666
3	Russian (ru) CNO-цикл		513
4	Spanish (es) Ciclo CNO		371
5	Japanese (ja) CNOサイクル		367
6	Chinese (zh) 碳氮氧循環		343
7	Korean (ko) CNO 순환		222
8	Italian (it) Ciclo del carbonio-azoto-ossigeno		188
9	French (fr) Cycle carbone-azote-oxygène		181
10	Polish (pl) Cykl węglowo-azotowo-tlenowy		146

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The following table shows the language versions of the article with the highest Authors’ Interest.

Language versions of the article "CNO cycle" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.

#	Language	AI award	Relative AI
1	English (en) CNO cycle		177
2	German (de) CNO-Zyklus		75
3	French (fr) Cycle carbone-azote-oxygène		57
4	Russian (ru) CNO-цикл		56
5	Italian (it) Ciclo del carbonio-azoto-ossigeno		53
6	Dutch (nl) Koolstof-stikstofcyclus		44
7	Hungarian (hu) CNO-ciklus		28
8	Galician (gl) Ciclo carbono-nitróxeno-osíxeno		27
9	Polish (pl) Cykl węglowo-azotowo-tlenowy		27
10	Japanese (ja) CNOサイクル		23

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The following table shows the language versions of the article with the highest Authors’ Interest in the last month.

Language versions of the article "CNO cycle" with the highest AI in June 2026

#	Language	AI award	Relative AI
1	English (en) CNO cycle		3
2	Serbian (sr) Niz ugljenik-azot-kiseonik		1
3	Arabic (ar) دورة كربون-نيتروجين-أكسجين		0
4	Catalan (ca) Cicle CNO		0
5	Czech (cs) CNO cyklus		0
6	Danish (da) CNO-cyklus		0
7	German (de) CNO-Zyklus		0
8	Greek (el) Κύκλος CNO		0
9	Spanish (es) Ciclo CNO		0
10	Estonian (et) Bethe tsükkel		0

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The following table shows the language versions of the article with the highest number of citations.

Language versions of the article "CNO cycle" with the highest Citation Index (CI)

#	Language	CI award	Relative CI
1	English (en) CNO cycle		490
2	Chinese (zh) 碳氮氧循環		273
3	Ukrainian (uk) Вуглецево-азотний цикл		265
4	Arabic (ar) دورة كربون-نيتروجين-أكسجين		258
5	Korean (ko) CNO 순환		193
6	Catalan (ca) Cicle CNO		185
7	Japanese (ja) CNOサイクル		178
8	Vietnamese (vi) Chu trình CNO		177
9	Portuguese (pt) Ciclo CNO		161
10	Russian (ru) CNO-цикл		158

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#	Language	Value
ar	Arabic دورة كربون-نيتروجين-أكسجين
ca	Catalan Cicle CNO
cs	Czech CNO cyklus
da	Danish CNO-cyklus
de	German CNO-Zyklus
el	Greek Κύκλος CNO
en	English CNO cycle
es	Spanish Ciclo CNO
et	Estonian Bethe tsükkel
fa	Persian چرخه سی‌ان‌او
fi	Finnish Hiilisykli
fr	French Cycle carbone-azote-oxygène
gl	Galician Ciclo carbono-nitróxeno-osíxeno
he	Hebrew מחזור CNO
hr	Croatian Niz ugljik-dušik-kisik
hu	Hungarian CNO-ciklus
id	Indonesian Siklus CNO
it	Italian Ciclo del carbonio-azoto-ossigeno
ja	Japanese CNOサイクル
ko	Korean CNO 순환
lt	Lithuanian Anglies, azoto ir deguonies ciklas
ms	Malay Kitaran CNO
nl	Dutch Koolstof-stikstofcyclus
nn	Norwegian (Nynorsk) CNO-syklusen
no	Norwegian CNO-syklusen
pl	Polish Cykl węglowo-azotowo-tlenowy
pt	Portuguese Ciclo CNO
ru	Russian CNO-цикл
sh	Serbo-Croatian Niz ugljik-dušik-kisik
sk	Slovak Uhlíkový cyklus
sr	Serbian Niz ugljenik-azot-kiseonik
sv	Swedish CNO-cykeln
ta	Tamil கா.நை.ஆ சுழற்சி
th	Thai วงจรซีเอ็นโอ
tr	Turkish KAO döngüsü
uk	Ukrainian Вуглецево-азотний цикл
vi	Vietnamese Chu trình CNO
zh	Chinese 碳氮氧循環

Best Rank

English: #98285 11.2020

Global: #87531 04.2008

Best Rank

English: #807 01.2002

Global: #950 01.2002

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In English Wikipedia the most popular articles on that day were: 2026 FIFA World Cup, Harry Kane, Julián Quiñones, List of FIFA World Cup top goalscorers, Kylian Mbappé, Democratic Republic of the Congo, Erling Haaland, DR Congo national football team, Melat Kiros, FIFA World Cup.

The WikiRank project is intended for automatic relative evaluation of the articles in the various language versions of Wikipedia. At the moment the service allows to compare over 50 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2026. When calculating current popularity and AI of articles data from June 2026 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2026... More information