# Earth

> third planet from the Sun in the Solar System

**Wikidata**: [Q2](https://www.wikidata.org/wiki/Q2)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Earth)  
**Source**: https://4ort.xyz/entity/earth


## References

1. [Source](https://solarsystem.nasa.gov/planets/earth/overview/)
2. Integrated Authority File
3. Virtual International Authority File
4. [Source](https://space.skyrocket.de/doc_sdat/intelsat-9.htm)
5. MusicBrainz
6. Lingua Libre
7. [Source](http://www.unicode.org/charts/PDF/U2600.pdf)
8. Nuovo soggettario
9. [Source](http://wonderopolis.org/wonder/what-is-earths-core-made-of)
10. The age of the Earth in the twentieth century: a problem (mostly) solved
11. [Source](https://www.theweathernetwork.com/us/news/articles/climate-and-environment/ecuadors-mt-chimborazo-is-officially-highest-spot-on-earth/66219)
12. [Source](https://oceanservice.noaa.gov/facts/highestpoint.html#:~:text=Mauna%20Kea%20is%20the%20tallest,33%2C500%20feet%20%5B10%2C210%20meters%5D.)
13. [The Geology Companion. Taylor & Francis](https://www.geokniga.org/bookfiles/geokniga-thegeologycompanion.pdf)
14. Freebase Data Dumps. 2013
15. Medical Subject Headings
16. [Source](http://www.census.gov/ipc/www/worldhis.html)
17. [Source](http://www.un.org/esa/population/publications/sixbillion/sixbilpart1.pdf)
18. [Source](http://polit.ru/news/1999/10/12/538144/)
19. State of World Population 2011
20. [Source](http://ru.worldstat.info/blog/skolko-lyudej-zhivet-na-zemle/)
21. [Source](http://www.weltbevoelkerung.de/aktuelles/details/show/detail/News/zum-jahresbeginn-7202951000-menschen-leben-auf-der-erde.html)
22. [Source](http://www.geohive.com/earth/population_now.aspx)
23. [Source](http://www.worldometers.info/world-population/)
24. [Source](https://www.worldometers.info/world-population/)
25. [Source](https://www.un.org/en/desa/world-population-reach-8-billion-15-november-2022)
26. [Source](https://www.census.gov/)
27. [NASA FACTS](https://nssdc.gsfc.nasa.gov/planetary/factsheet/earthfact.html)
28. Library of Congress Subject Headings
29. GeoNames
30. [2011](http://abstractsearch.agu.org/meetings/2011/FM/OS13B-1517.html)
31. [Source](https://archive.org/stream/galatheadeepseae00dans/galatheadeepseae00dans_djvu.txt)
32. BBC Things
33. [Source](https://books.google.com/?id=w8PK2XFLLH8C&pg=PA294)
34. [Source](https://solarsystem.nasa.gov/planets/earth/by-the-numbers/)
35. [Source](https://nssdc.gsfc.nasa.gov/planetary/factsheet/earthfact.html)
36. Celestial Mechanics and Dynamical Astronomy
37. [Source](https://arxiv.org/ftp/arxiv/papers/1007/1007.4497.pdf)
38. [Source](http://news.bbc.co.uk/2/hi/science/nature/8406839.stm)
39. [Earth Fact Sheet](http://nssdc.gsfc.nasa.gov/planetary/factsheet/earthfact.html)
40. [USEFUL CONSTANTS](http://hpiers.obspm.fr/eop-pc/models/constants.html)
41. [Source](http://nssdc.gsfc.nasa.gov/planetary/factsheet/earthfact.html)
42. Keplerian elements for approximate positions of the major planets
43. YSO-Wikidata mapping project
44. [Source](https://www.britannica.com/science/How-Big-Is-Earth)
45. [Education : Number of out-of-school children, adolescents and youth of primary and secondary school age. UNESCO Institute for Statistics](http://data.uis.unesco.org/index.aspx?queryid=3372)
46. [UNESCO Institute for Statistics](http://data.uis.unesco.org/index.aspx?queryid=3372)
47. AGROVOC
48. [DBpedia](https://dbpedia.org/page/Earth)
49. New World Encyclopedia
50. UMLS 2023