(Redirected from 1 E7 m²)
10−70 to 10−9 square metres
edit
List of orders of magnitude for area 10−70 to 10−9 square metres
Factor (m2)
|
Multiple
|
Value
|
Item
|
10−70
|
|
2.6×10−70 m2
|
Planck area, [1]
|
10−60
|
1 square quectometre
|
10−54
|
1 square rontometre
|
10−52
|
|
100 rm2
|
1 shed[2]
|
10−48
|
1 square yoctometre (ym2)
|
1 ym2
|
|
10−43
|
|
100,000 ym2
|
1 femtobarn[3]
|
10−42
|
1 square zeptometre (zm2)
|
1 zm2
|
|
10−36
|
1 square attometre (am2)
|
1 am2
|
|
10−30
|
1 square femtometre (fm2)
|
1 fm2
|
|
10−29
|
|
66.52 fm2
|
Thomson cross-section of the electron[4]
|
10−28
|
|
100 fm2
|
1 barn, roughly the cross-sectional area of a uranium nucleus[5]
|
10−24
|
1 square picometre (pm2)
|
1 pm2
|
|
10−20
|
1 square angstrom (Å2)
|
10,000 pm2
|
|
10−19
|
|
100,000 pm2
|
Area of a lipid bilayer, per molecule[6]
|
|
75,000–260,000 pm2
|
Surface area of the 20 standard amino acids[7]
|
10−18
|
1 square nanometre (nm2)
|
1 nm2
|
|
10−16
|
|
100 nm2
|
Globular proteins: solvent-accessible surface area of a typical globular protein, having a typical molecular mass of ~35000 u (quite variable)[8]
|
10−14
|
|
17,000 nm2
|
Cross-sectional area of a nuclear pore complex in vertebrates[9]
|
10−12
|
1 square micrometre (μm2)
|
6 μm2
|
Surface area of an E. coli bacterium[10]
|
10−10
|
|
100 μm2
|
Surface area of a red blood cell[11]
|
10−9
|
|
6,000–110,000 μm2
|
Range of common LCD screen pixel sizes[12]
|
|
7,000 μm2
|
Area of a dot printed using 300 dots per inch resolution[13]
|
|
8,000 μm2
|
Cross-sectional area of a straight human hair that is 100 μm[14] in diameter[15]
|
10−8 to 10−1 square metres
edit
List of orders of magnitude for areas 10−8 to 10−1 square metres
Factor (m2)
|
Multiple
|
Value
|
Item
|
10−8
|
|
55,000 μm2
|
Size of a pixel on a typical modern computer display
|
10−7
|
|
2-400,000 μm2
|
Cross-sectional area of a mechanical pencil lead (0.5-0.7 mm in diameter)[16]
|
10−6
|
1 square millimetre (mm2)
|
1–2 mm2
|
Area of a human fovea[17]
|
2 mm2
|
Area of the head of a pin
|
10−5
|
|
30–50 mm2
|
Area of a 6–8 mm hole punched in a piece of paper by a hole punch[18]
|
10−4
|
1 square centimetre (cm2)
|
290 mm2
|
Area of one side of a U.S. penny[19][20]
|
500 mm2
|
Area of a typical postage stamp
|
10−3
|
|
1,100 mm2
|
Area of a human retina[21]
|
4,600 mm2
|
Area of the face of a credit card[22]
|
4,800 mm2
|
Largest side of a cigarette box
|
10−2
|
1 square decimetre (dm2)
|
10,000 mm2 |
Index card (3 × 5 inches)[23]
|
60,000 mm2 |
American letter paper (11 × 8.5 inches, "A" size)
|
62,370 mm2 |
International A4 paper (210 × 297 mm)
|
92,903 mm2 |
1 square foot[24]
|
10−1
|
|
125,000 mm2 |
International A3 paper (297 × 420 mm)
|
180,000 mm2 |
Surface area of a basketball (diameter 24 cm)[25][26]
|
250,000 mm2 |
International A2 paper (420 × 594 mm)
|
500,000 mm2 |
International A1 paper (594 × 841 mm)
|
100 to 107 square metres
edit
List of orders of magnitude for areas 100 to 107 square metres.
Factor (m2)
|
Multiple
|
Value
|
Item
|
100
|
1 square metre
|
1 m2 |
International A0 paper (841 × 1189 mm)
|
1.73 m2 |
A number commonly used as the average body surface area of a human[27]
|
1–4 m2 |
Area of the top of an office desk
|
101
|
|
10–20 m2
|
A parking space
|
70 m2
|
Approximate surface area of a human lung[28]
|
102
|
1 square decametre (dam2)
|
100 m2
|
One are (a)
|
162 m2
|
Size of a volleyball court (18 × 9 metres)[29]
|
202 m2
|
Floor area of a median suburban three-bedroom house in the US in 2010: 2,169 sq ft (201.5 m2)[30]
|
261 m2
|
Size of a tennis court[31]
|
437 m2
|
Size of an NBA/WNBA/NCAA basketball court[32]
|
845 m2
|
Wing area of Airbus A380, the largest commercial airliner[33]
|
978 m2
|
Size of the primary mirror of the Extremely Large Telescope, the largest optical telescope in the world (under construction)[34]
|
103
|
1 kilo square meter k(m2)
|
1,000 m2 |
Surface area of a modern stremma or dunam
|
1,250 m2 |
Surface area of the water in an Olympic-size swimming pool[35]
|
4,047 m2 |
1 acre[36]
|
5,400 m2 |
Size of an American football field[37][38]
|
7,140 m2 |
Size of a typical football (soccer) field[39][40]
|
104
|
1 square hectometre (hm2)
|
10,000 m2 |
1 hectare (ha)[41]
|
17,000 m2 |
Approximate area of a cricket field (theoretical limits: 6,402 m2 to 21,273 m2)[42]
|
22,100 m2 |
Area of a Manhattan city block
|
53,000 m2 |
Base of the Great Pyramid of Giza[43][44]
|
105
|
|
195,000 m2 |
Irish National Botanic Gardens[45]
|
490,000 m2 |
Vatican City[46]
|
600,000 m2 |
Total floor area of the Pentagon[47]
|
887,800 m2 |
AvtoVAZ main assembly building, Tolyatti, Russia (largest building by footprint)
|
106
|
1 mega square meter M(m2)
1 square kilometre (km2)
|
1.76 km2 |
New Century Global Center, Chengdu, China (largest building by total floor area)
|
2 km2 |
Monaco (country ranked 192nd by area)[48]
|
2.59 km2 |
1 square mile[49]
|
2.9 km2 |
City of London (not all of modern London)[50]
|
107
|
|
59.5 km2 |
Manhattan Island (land area)[51]
|
61 km2 |
San Marino[52]
|
108 to 1014 square metres
edit
Factor (m2)
|
Multiple
|
Value
|
Item
|
108
|
|
105 km2 |
Paris (inner city only)[53]
|
110 km2 |
Walt Disney World[54]
|
272 km2 |
Taipei City[55]
|
630 km2 |
Toronto[56]
|
109
|
1 giga square meter G(m2)
|
1100 km2 |
Hong Kong[57]
|
1290 km2 |
Los Angeles, California, United States (city)[58]
|
1962 km2 |
Jacksonville, Florida; largest city in the Continental US[59]
|
2188 km2 |
Tokyo[60]
|
3,130 km2
|
Average area of an American county
|
5780 km2 |
Administrative area of Bali[61]
|
8030 km2 |
Community of Madrid, Spain
|
1010
|
|
11,000 km2 |
Jamaica[62]
|
30,528 km2 |
Belgium
|
68,870 km2 |
Lake Victoria[63]
|
84,000 km2 |
Austria[64]
|
1011
|
|
100,000 km2 |
South Korea[65]
|
167,996 km2 |
Jiuquan in China
|
232,000 km2 |
Total area covered by underwater search for Malaysia Airlines Flight 370 (including both 2014-2017 and 2018 searches)
|
238,397
|
Romania[66]
|
301,338 km2 |
Italy[67]
|
357,000 km2 |
Germany[68]
|
377,900 km2 |
Japan[69]
|
510,000 km2 |
Spain[70]
|
780,000 km2 |
Turkey[71]
|
1012
|
1 tera square meter T(m2)
1 square megametre (Mm2)
|
1.0 Mm2 |
Egypt (country ranked 29th by area)[72]
|
2 Mm2
|
Mexico
|
3.10 Mm2 |
Sakha (Yakutia) Republic in Russia (largest subnational governing body)[73]
|
5 Mm2 |
Largest extent of the Roman Empire[74][75]
|
7.74 Mm2 |
Australia (country ranked 6th by area)[76]
|
8.5 Mm2 |
Brazil
|
9.5 Mm2
|
China/ United States of America
|
1013
|
|
10 Mm2 |
Canada (including water)[77]
|
14 Mm2 |
Antarctica[78]
|
14 Mm2 |
Arable land worldwide[79]
|
16.6 Mm2 |
Surface area of Pluto[80]
|
17 Mm2 |
Russia (country ranked 1st by area)[81]
|
30 Mm2 |
Africa[82]
|
35.5 Mm2 |
Largest extent of the British Empire[83]
|
38 Mm2 |
Surface area of the Moon[84]
|
77 Mm2 |
Atlantic Ocean[85]
|
1014
|
|
144 Mm2 |
Surface area of Mars[86]
|
150 Mm2 |
Land area of Earth[87]
|
156 Mm2 |
Pacific Ocean[88]
|
360 Mm2 |
Water area of Earth[87]
|
510 Mm2 |
Total surface area of Earth[87]
|
1015 to 1026 square metres
edit
List of orders of magnitude for areas 1015 to 1026 square metres.
Factor (m2)
|
Multiple
|
Value
|
Item
|
1015
|
1 peta square meter P(m2)
|
1,000 Mm2 |
Surface area of the white dwarf, Van Maanen's star
|
7,600 Mm2 |
Surface area of Neptune[89]
|
1016
|
|
43,000 Mm2 |
Surface area of Saturn[90]
|
61 000 Mm2 |
Surface area of Jupiter,[91] the "surface" area of the spheroid (calculated from the mean radius as reported by NASA). The cross-sectional area of Jupiter, which is the same as the "circle" of Jupiter seen by an approaching spacecraft, is almost exactly one quarter the surface-area of the overall sphere, which in the case of Jupiter is approximately 1.535×1016 m2.
|
1017
|
|
2-600 000 Mm2 |
Surface area of the brown dwarf CT Chamaeleontis B.
|
460,000 Mm2 |
Area swept by the Moon's orbit of Earth
|
1018
|
1 square gigametre (Gm2)
|
6.1 Gm2 |
Surface area of the Sun[92]
|
1019
|
|
30 Gm2 |
Surface area of the star Vega
|
1020
|
|
100 Gm2
|
|
1021
|
1 zetta square meter Z(m2)
|
1 000 Gm2
|
|
1022
|
|
11 000 Gm2 |
Area swept by Mercury's orbit around the Sun
|
37 000 Gm2 |
Area swept by Venus' orbit around the Sun
|
71 000 Gm2 |
Area swept by Earth's orbit around the Sun
|
1023
|
|
160 000 Gm2 |
Area swept by Mars' orbit around the Sun
|
281 000 Gm2 |
Surface area of a Dyson sphere with a radius of 1 AU
|
1024
|
1 yotta square meter (m2)
1 square terametre (Tm2)
|
1.9 Tm2 |
Area swept by Jupiter's orbit around the Sun
|
6.4 Tm2 |
Area swept by Saturn's orbit around the Sun
|
8.5 Tm2 |
Surface area of the red supergiant star Betelgeuse
|
1025
|
|
24 Tm2 |
Surface area of the hypergiant star VY Canis Majoris
|
26 Tm2 |
Area swept by Uranus' orbit around the Sun
|
64 Tm2 |
Area swept by Neptune's orbit around the Sun
|
1026
|
|
110 Tm2 |
Area swept by Pluto's orbit around the Sun
|
1027 square metres and larger
edit
List of orders of magnitude for areas 1027 square metres and larger.
Factor (m2)
|
Multiple
|
Value
|
Item
|
1030
|
1 square petametre (Pm2)
|
|
|
1031
|
|
10 Pm2
|
|
1032
|
|
200 Pm2
|
Roughly the surface area of an Oort Cloud
|
|
300 Pm2
|
Roughly the surface area of a Bok globule
|
1033
|
|
1 000 Pm2
|
|
1034
|
|
30 000 Pm2
|
Roughly the surface area of The Bubble nebula
|
1035
|
|
100 000 Pm2
|
|
1036
|
1 square exametre (Em2)
|
|
|
...
|
1041
|
|
700 000 Em2
|
Roughly the area of Milky Way's galactic disk
|
1042
|
1 square zettametre (Zm2)
|
|
|
...
|
1048
|
1 square yottametre (Ym2)
|
|
|
1054
|
1 square ronnametre (Rm2)
|
2.4 Rm2
|
Surface area of the observable universe[93]
|
- ^ Calculated: square of the Planck length = (1.62e-35 m)^2 = 2.6e-70 m^2
- ^ Russ Rowlett (September 1, 2004). "Units: S". How Many? A Dictionary of Units of Measurement. University of North Carolina at Chapel Hill. Retrieved 2011-10-25.
- ^ "Femtobarn". CERN writing guidelines. CERN. Retrieved 2015-10-22.
- ^ Eric W. Weisstein. "Thomson Cross Section". Eric Weisstein's World of Science. Wolfram Research. Retrieved 2015-10-22.
- ^ "Other non-SI units". SI brochure. BIPM. Archived from the original on 2008-08-21. Retrieved 2011-10-25.
- ^ ""Rule of thumb" for the area per molecule in lipid bilayer". BioNumbers. Retrieved 2011-10-09.
- ^ "Individual Properties of the 20 Standard Amino Acids: Properties and Images". The Amino Acid Repository. Jena Library of Biological Macromolecules. Retrieved 2011-10-10.
- ^ Janin, J. E. L. (1979). "Surface and inside volumes in globular proteins". Nature. 277 (5696): 491–492. Bibcode:1979Natur.277..491J. doi:10.1038/277491a0. PMID 763335. S2CID 4338901.
- ^ "The Nuclear Pore Complex". UIUC Theoretical and Computational Biophysics Group. Retrieved 2011-10-14.
- ^ "E. coli Statistics". The CyberCell Database. Archived from the original on 2011-10-27. Retrieved 2011-09-11.
- ^ Marcelli, Gianluca; Parker, Kim H.; Winlove, C. Peter (2005). "Thermal Fluctuations of Red Blood Cell Membrane via a Constant-Area Particle-Dynamics Model". Biophysical Journal. 89 (4): 2473–2480. Bibcode:2005BpJ....89.2473M. doi:10.1529/biophysj.104.056168. PMC 1366746. PMID 16055528.
- ^ Calculated: Smallest and largest common pitches were 77 micrometers and 337 micrometers. (77e-6 m)^2 ~= 6e-9 m^2. (337e-6 m)^2 ~= 114e-9 m^2 ~= 110e-9 m^2
- ^ Calculated: (300 dots per inch / 2.54e-2 m/inch)^(-2) = 7.2e-9 m^2
- ^ "Hair Fiber Composition". Retrieved 2011-09-30.
- ^ Calculated: 100 μm in diameter => pi * ((1e-4 m)/2)**2 = 7.9e-9 m^2
- ^ Calculated: pi * (0.5mm/2)^2 = 2.0e-7 m^2 and pi * (0.7mm/2)^2 = 3.8e-7 m^2)
- ^ "Part XIII: Facts and Figures concerning the human retina". Webvision. University of Utah. Archived from the original on 2011-10-11. Retrieved 2011-09-28.
- ^ Calculated: ((6e-3 m)/2)**2 * pi = 2.8e-5 m^2 and ((8e-3 m)/2)**2 * pi = 5.0e-5 m^2
- ^ "Coin specifications". United States Mint. Retrieved 2011-12-28.
- ^ Calculated: area = pi * diameter^2 / 4 = 3.14 * (19.05e-3 m)^2 = 2.850e-4 m^2
- ^ Taylor, Enid; Jennings, Alan (1971). "Calculation of total retinal area". Br. J. Ophthalmol. 55 (4): 262–5. doi:10.1136/bjo.55.4.262. PMC 1208280. PMID 5572268.
- ^ "Credit Card Dimensions". Retrieved 2011-09-30.
- ^ Calculated: 3 inches * 5 inches * (2.54e-2 m/inch)^2 = 9.7e-3 m^2 ~= 0.01 m^2
- ^ Calculated: 1 foot * 1 foot * (0.3048 meters / foot)^2 = 0.092.90304 m^2
- ^ "Rules of the Game". USA Basketball. Archived from the original on 2011-10-27. Retrieved 2011-10-28.
- ^ Calculated: 29.5-29.75 inch circumference * 2.54 cm / in = 23.85-24.05 cm diameter => radius = 0.119-0.120 m => Area = 4 * pi * (0.119 m)^2 = 0.18 m^2
- ^ Sacco, Joseph J.; Botten, Joanne; Macbeth, Fergus; Bagust, Adrian; Clark, Peter (2010). "The Average Body Surface Area of Adult Cancer Patients in the UK: A Multicentre Retrospective Study". PLOS ONE. 5 (1): e8933. Bibcode:2010PLoSO...5.8933S. doi:10.1371/journal.pone.0008933. PMC 2812484. PMID 20126669.
- ^ Notter, Robert H. (2000). Lung surfactants: basic science and clinical applications. New York, N.Y: Marcel Dekker. p. 120. ISBN 0-8247-0401-0. Retrieved 2011-09-27.
- ^ "Section 1.1" (PDF). Official Volleyball Rules 2011-2012. FIVB. 2010. Retrieved 2011-10-27.
The playing court is a rectangle measuring 18 x 9 m, surrounded by a free zone which is a minimum of 3 m wide on all sides.
- ^ "Median and Average Square Feet of Floor Area in New Single-Family Houses Completed by Location" (PDF). US Census Bureau. Retrieved 2011-09-26.
- ^ "Area of a Tennis Court". The Physics Factbook. Retrieved 2011-09-27.
- ^ Calculated: 4,700 sq ft * (0.3048 ft/m)2 = 436.644288 m2
- ^ "A380 Prestige Specifications" (PDF). Airbus. Archived from the original (PDF) on 12 October 2016.
- ^ "Extremely Large Telescope - Timeline". Retrieved 11 July 2023.
- ^ Calculated: 50 m * 25 m = 1250 m^2
- ^ "General Tables of Units of Measurement" (PDF). NIST. Archived from the original (PDF) on 2006-11-26. Retrieved 2011-10-28.
4046.87
- ^ "What are the Dimensions of a Football Field". Dimensions Guide. Retrieved 2011-10-27.
- ^ Calculated: 360 feet * 160 feet * (0.3048 m/ft)^2 = 5351 m^2 ~= 5400 m^2
- ^ "How Big Is An Olympic Soccer Field?". LIVESTRONG.COM. Retrieved 2012-01-04.
For the Olympics, fields are supposed to measure exactly 105 meters long and 68 meters wide
- ^ Calculated: 105 m * 68 m = 7140 m^2
- ^ "General Tables of Units of Measurement" (PDF). NIST. Archived from the original (PDF) on 2006-11-26. Retrieved 2011-10-28.
- ^ "AFL Ground Sizes | Passy's World of Mathematics". passyworldofmathematics.com. 11 September 2011. Retrieved 2016-11-12.
- ^ Greenberg, Ralph. "THE GREAT PYRAMID OF GIZA (Some Elegant Numerical Relationships)". Retrieved 2012-01-04.
average length of the four sides is 230.364 meters
- ^ Calculated: 230.364 m^2 ~= 53068 m^2
- ^ Gartland, Fiona. "Valuable lead roofing stolen from Dublin bandstands". Archived from the original on 30 May 2018. Retrieved 29 May 2018.
- ^ "Holy See (Vatican City)". The World Factbook. Central Intelligence Agency. Retrieved 2011-10-28.
- ^ "The Pentagon - George Bergstrom". Great Buildings Online. Retrieved 2011-10-28.
Floor area of 6.5 million square feet, 34 acres, 13.8 hectares, of which 3.7 million square feet are used for offices.
- ^ "Monaco". The World Factbook. Central Intelligence Agency. Retrieved 2011-09-30.
- ^ Calculated: 1 mile * 1 mile * (1.61 km / mile)^2 = 2.59 km^2
- ^ "Jurisdictions: London". The International Finance Centre Portal. Retrieved 2011-10-28.
- ^ "New York -- Place and County Subdivision: Population, Housing Units, Area, and Density 2000". Census 2000 Summary File 1. US Census Bureau. Archived from the original on 2011-01-03. Retrieved 2011-10-28.
- ^ "San Marino". The World Factbook. Central Intelligence Agency. Retrieved 2011-09-30.
- ^ "Comparateur de territoire: Commune de Paris (75056)". INSEE. Retrieved 2020-08-26.
- ^ "Walt Disney World Resort". Disney By The Numb3rs. Archived from the original on 2015-06-12. Retrieved 2011-10-28.
30,500 acres
- ^ "Appendix II Statistics". Taipei Yearbook 2010. Archived from the original on 2012-05-22. Retrieved 2011-10-28.
- ^ "Population and Dwelling Counts". 2001 Census. Statistics Canada. Retrieved 2011-10-28.
- ^ "Hong Kong". The World Factbook. Central Intelligence Agency. Retrieved 2011-09-29.
- ^ "California by Place: Los Angeles city". US Census. Archived from the original on 2020-02-12. Retrieved 2011-10-28.
498.29 square miles
- ^ "Cities with 100,000 or More Population in 2000 ranked by Land Area (square miles) /1, 2000 in Rank Order". U.S. Census Bureau, Administrative and Customer Services Division, Statistical Compendia Branch. March 16, 2004. Archived from the original on October 17, 2002. Retrieved 2010-10-26.
- ^ "OVERVIEW OF TOKYO". Tokyo Metropolitan Government. Archived from the original on 2011-11-08. Retrieved 2011-10-28.
- ^ "Kabupaten Klungkung : Data Agregat per Kecamatan" (PDF). Sp2010.bps.go.id. 2010. Retrieved 5 January 2018.
- ^ "Jamaica". The World Factbook. Central Intelligence Agency. Retrieved 2011-09-29.
- ^ "Lake Profile: Victoria". World Lakes. LakeNet. Retrieved 2011-10-28.
- ^ "Austria". The World Factbook. Central Intelligence Agency. Retrieved 2011-09-29.
- ^ "South Korea". The World Factbook. Central Intelligence Agency. Retrieved 2011-09-29.
- ^ The World Factbook. Central Intelligence Agency. Retrieved 2011-09-29.
- ^ "Italy". The World Factbook. Central Intelligence Agency. Retrieved 2011-09-29.
- ^ "Germany". The World Factbook. Central Intelligence Agency. Retrieved 2011-09-29.
- ^ "Japan". The World Factbook. Central Intelligence Agency. Retrieved 2011-09-29.
- ^ "Spain". The World Factbook. Central Intelligence Agency. Retrieved 2011-09-29.
- ^ "Turkey". The World Factbook. Central Intelligence Agency. Archived from the original on January 10, 2021. Retrieved 2011-09-29.
- ^ "Egypt". The World Factbook. Central Intelligence Agency. Retrieved 2011-09-29.
- ^ Rosstat (Russian Statistical Service), 2010 Archived 2012-10-18 at the Wayback Machine (xls). Retrieved 2012-06-15.
- ^ Turchin, Peter; Adams, Jonathan M.; Hall, Thomas D (December 2006). "East-West Orientation of Historical Empires". Journal of World-Systems Research. 12 (2): 222. ISSN 1076-156X. Retrieved 2016-09-16.
- ^ Taagepera, Rein (1979). "Size and Duration of Empires: Growth-Decline Curves, 600 B.C. to 600 A.D.". Social Science History. 3 (3/4): 125. doi:10.2307/1170959. JSTOR 1170959.
- ^ "Australia". The World Factbook. Central Intelligence Agency. Retrieved 2011-10-28.
- ^ "Canada". The World Factbook. Central Intelligence Agency. Retrieved 2011-09-29.
- ^ "Antarctica". The World Factbook. Central Intelligence Agency. Retrieved 2011-10-28.
- ^ "FAO Resources page". FAO.org. 2010.
- ^ "Pluto: By the Numbers". Solar System Exploration. NASA. Archived from the original on 2015-09-28. Retrieved 2015-12-11.
- ^ "Russia". The World Factbook. Central Intelligence Agency. Retrieved 2011-09-29.
- ^ "Map of Africa". Worldatlas.com. Retrieved 2012-01-04.
30,065,000 sq km
- ^ Rein Taagepera (September 1997). "Expansion and Contraction Patterns of Large Polities: Context for Russia" (PDF). International Studies Quarterly. 41 (3): 502. doi:10.1111/0020-8833.00053. JSTOR 2600793.
- ^ "Earth's Moon: Facts & Figures". Solar System Exploration. NASA. Archived from the original on 2004-02-24. Retrieved 2011-09-29.
- ^ "The World Factbook: Atlantic Ocean". Central Intelligence Agency. 2011-03-24. Retrieved 2011-09-30.
- ^ "Mars: Facts & Figures". Solar System Exploration. NASA. Archived from the original on 2003-12-15. Retrieved 2011-09-29.
- ^ a b c "The World Factbook: World". Central Intelligence Agency. 2011-08-31. Retrieved 2011-09-27.
- ^ "The World Factbook: Pacific Ocean". Central Intelligence Agency. 2011-11-17. Retrieved 2011-09-30.
- ^ "Neptune: Facts & Figures". Solar System Exploration. NASA. Archived from the original on 2003-12-15. Retrieved 2011-09-29.
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