Terra oca

Quality:

Hollow Earth - historical concept proposing that the planet Earth is entirely hollow or contains a substantial interior space. Article “Terra oca” in Portuguese Wikipedia has 62.4 points for quality (as of July 1, 2025). The article contains 63 references and 15 sections. The article also contains templates indicating quality issues, therefore its score was reduced by 3.28 points.

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

Since the creation of article “Terra oca”, its content was written by 53 registered users of Portuguese Wikipedia and edited by 1865 registered Wikipedia users in all languages.

The article is cited 297 times in Portuguese Wikipedia and cited 2759 times in all languages.

The highest Authors Interest rank from 2001:

• Local (Portuguese): #3274 in July 2014
• Global: #183 in October 2001

The highest popularity rank from 2008:

• Local (Portuguese): #5263 in September 2011
• Global: #2130 in April 2021

There are 29 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, 2025 (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) Hollow Earth		71.5699
2	Portuguese (pt) Terra oca		62.3628
3	Armenian (hy) Երկրի խոռոչ		59.5917
4	German (de) Theorie der hohlen Erde		50.3224
5	Vietnamese (vi) Trái Đất rỗng		45.4997
6	Ukrainian (uk) Порожниста Земля		40.6596
7	Italian (it) Teoria della Terra cava		39.4103
8	Russian (ru) Полая Земля		34.6807
9	Spanish (es) Creencia en la Tierra hueca		33.0868
10	Hebrew (he) כדור הארץ החלול		31.7816

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

#	Language	Popularity award	Relative popularity
1	English (en) Hollow Earth		7 305 686
2	Spanish (es) Creencia en la Tierra hueca		1 564 063
3	Japanese (ja) 地球空洞説		939 034
4	German (de) Theorie der hohlen Erde		750 442
5	Russian (ru) Полая Земля		615 668
6	French (fr) Théories de la Terre creuse		602 376
7	Italian (it) Teoria della Terra cava		551 535
8	Portuguese (pt) Terra oca		323 706
9	Korean (ko) 지구공동설		317 645
10	Arabic (ar) أرض مجوفة		313 391

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

#	Language	Popularity award	Relative popularity
1	English (en) Hollow Earth		23 883
2	Spanish (es) Creencia en la Tierra hueca		2 244
3	Russian (ru) Полая Земля		2 222
4	German (de) Theorie der hohlen Erde		2 179
5	Japanese (ja) 地球空洞説		2 159
6	Italian (it) Teoria della Terra cava		1 372
7	French (fr) Théories de la Terre creuse		1 022
8	Chinese (zh) 地球空洞说		798
9	Portuguese (pt) Terra oca		595
10	Simple English (simple) Hollow Earth		517

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

#	Language	AI award	Relative AI
1	English (en) Hollow Earth		674
2	German (de) Theorie der hohlen Erde		162
3	French (fr) Théories de la Terre creuse		142
4	Spanish (es) Creencia en la Tierra hueca		132
5	Russian (ru) Полая Земля		112
6	Italian (it) Teoria della Terra cava		104
7	Japanese (ja) 地球空洞説		74
8	Portuguese (pt) Terra oca		53
9	Chinese (zh) 地球空洞说		41
10	Arabic (ar) أرض مجوفة		38

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

#	Language	AI award	Relative AI
1	Japanese (ja) 地球空洞説		2
2	English (en) Hollow Earth		1
3	Italian (it) Teoria della Terra cava		1
4	Ukrainian (uk) Порожниста Земля		1
5	Arabic (ar) أرض مجوفة		0
6	Catalan (ca) Teoria intraterrestre		0
7	Czech (cs) Dutozemě		0
8	German (de) Theorie der hohlen Erde		0
9	Greek (el) Κοίλη Γη		0
10	Spanish (es) Creencia en la Tierra hueca		0

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

On 16 March 2026 in multilingual Wikipedia, Internet users most often read articles on the following topics: 98th Academy Awards, Michael B. Jordan, Sinners, Jessie Buckley, Paul Thomas Anderson, Sean Penn, One Battle After Another, Amy Madigan, Hamnet, Timothée Chalamet.

In Portuguese Wikipedia the most popular articles on that day were: Michael B. Jordan, Oscar 2026, One Battle After Another, Pecadores (filme), Sean Penn, Paul Thomas Anderson, Jessie Buckley, Robert Redford, Roger Ibañez, O Agente Secreto.

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 44 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2025. When calculating current popularity and AI of articles data from June 2025 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2025... More information