List of objects by size

From the Science Archives, the open-project database of science information that barely anyone can edit
(Redirected from Sizes)
Jump to navigation Jump to search

This is a size comparison of several notable objects, with units of measurement for comparison. References can be found on the object's individual page.

Name of Object Type / Classification Measurement Notes
Planck Length and Quantum Foam Hypothetical subatomic particle 10^-100 meters Believed to be the smallest thing possible. Anything smaller makes "no physical sense".
String theory 10^-36 meters 11 dimensional objects infinitely larger than the Planck Length.
Quark Subatomic particles 10^-18 meters Building block of Hadrons.
Electron Negatively charged atomic particle.
Proton 10^-15 meters Positively charged hadron.
Neutron Hadron with no charge.
Atomic Nucleus Group of subatomic particles 10^-14 meters

1 angstrom (10^-10 meters)

Hydrogen Element atom 10^-10 meters First element on the Periodic Table
Carbon 6th element
Nitrogen 7th element; makes up 78% of any sample of air
Oxygen 8th element
Chlorine 17th element
Sulphur 16th element
Water Molecule Compound of hydrogen and oxygen
Uranium Element atom 92nd element
Caesium 55th element
Hemoglobin Molecule 10^-9 meters Iron-containing component of blood
HIV virus Virus 10^-8 meters
DNA Molecule 10^-7 meters
Nanobe Virus 10^-7 meters
Wavelength of violet light Electromagnetic Radiation 4 - 4,5 x 10^7 meters[1]
Wavelength of red light 6,35 x 7 x 10^7 meters[2]
1 micron (μm)
Platelet Cell 10^-6 meters
Red Blood Cell
White Blood Cell 0.7 - 3 x 10^-5 meters[3]
Paramecium Protist 10^-4 meters
Green Euglena Eukaryote
Skin Cell Cell
Thiomargarita Namibiensis Bacterium 1 - 7,5 x 10^-4 meters[4][5] Largest known bacteria.
1 millimeter (mm)
1 centimeter (cm)
.44 Magnum Gun Bullet 10^-2 meters
Lilliputian Mammal 1.41 * 10^-2 meters Citizens of the fictional island of Lilliput (see below).
House Cat Mammal 10^-1 meters
1 meter (m)
Danny Phantom Fictional character 1.25 meters Character from children's TV show Danny Phantom.
Cassini-Huygens Spacecraft 2.5 meters Spacecraft that dived into Saturn's atmosphere on September 2017.
Oak Tree Plant 8 meters
Tyrannosaurus Rex Dinosaur 10 meters
Brobdingnagian Mammal 22 meters[6] Citizens of the fictional region of Brobdingnag (see below).
Galileo Spacecraft 25 meters Spacecraft that dived into Jupiter's atmosphere.
Blue Whale Mammal 29,9 meters[7]
1998 KY26 Asteroid 30 meters
2007 HJ 37 meters The object in the Solar System that spins the fastest.
B2 Stealth Bomber Aircraft 52 meters Costing over 2 billion dollars to make, it is the most expensive aircraft.
Depth of Champagne Pool Depth of a hot spring 62 meters Famous Hot Spring in New Zealand.
Statue of Liberty Copper Statue 93 meters[8]
Hyperion Tree California Redwood 115,92 meters[9] Tallest known tree.
The Shard Building 310 meters
Empire State Building 386 meters
Taipei 101 439.2 meters
Burj Khalifa 828 meters
Angel Falls Waterfall 979 meters Tallest waterfall.
1 kilometer (km)
Old Rag Mountain Mountain 1,001 meters
The Golden Gate Bridge Suspension Bridge 1,3 kilometers
Dactyl Moon of 243 Ida 1.4 kilometers
Lilliput Fictional island 1.6 kilometers Fictional island nation from the book Gulliver's Travels by Jonathan Swift.
Le Conte Mountain 2 kilometers
The Fortress 3 kilometers
Les Droites 4 kilometers
Puncak Jaya 4,88 kilometers[10] Highest mountain in Australia (the continent).
Vinson Massif 4,89 kilometers[11] Highest mountain in Antarctica.
Elbrus 5,64 kilometers[12] Highest mountain in Europe.
Kilimanjaro 5,9 kilometers[13][14] Highest mountain in Africa.
Denali 6,19 kilometers[15][16] Highest mountain in North America.
Chimborazo 6,26 kilometers[17] A mountain in Ecuador that is the closest point on Earth to the Moon because of the Earth's equatorial bulge.
Aconcagua 6,96 kilometers[18] Highest mountain in South America.
Everest 8,85 kilometers[19] Highest mountain in Asia; highest mountain from sea level.
Mauna Kea ~10 kilometers[20] Highest mountain in the United States in the world when measured from base (below sea level) to summit. Not located on any continent.
Deimos Moon of Mars 12,4 kilometers[21]
Epimetheus Moon of Saturn 15.4 kilometers[22]
Phobos Moon of Mars 22 kilometers[23]
243 Ida Koronis Asteroid 31.4 kilometers[24]
Sjælland Island of Denmark square kilometers
Janus Moon of Saturn 179 kilometers
Hyperion 270 kilometers[25]
Mimas 396,4 kilometers[26]
Proteus Moon of Neptune 420 kilometers[27]
Miranda Moon of Uranus 472 kilometers
Enceladus Moon of Saturn 504,2 kilometers[28][29]
4 Vesta Asteroid 528 kilometers
50000 Quaoar Trans-Neptunian object 890 kilometers
1 Ceres Asteroid/Dwarf Planet 946 kilometers[30] Largest asteroid for a time, then classified as a dwarf planet.
Ariel Moon of Uranus 1,128 kilometers
Charon Moon of Pluto 1,212 km[31][32]
United Kingdom Monarchy ~1,400 km (from northern Scotland to Devon)
Haumea Dwarf Planet 1,632 km (mean)[33]
Eris 2,326 km
Pluto 2,376 km
Europa Moon of Jupiter 3,122 km
The Moon Moon of Earth 3,474.2 km
Io Moon of Jupiter 3,821 km
Callisto 4,820 km
Mercury Terrestrial Planet 4,879 km
Titan Moon of Saturn 5,150 km
Ganymede Moon of Jupiter 5,262 km Largest moon in the solar system.
Mars Terrestrial Planet 6,779 km
Canada Democratic Country 9,306 km Largest country in terms of total area in the Western Hemisphere.
Brobdingnag Fictional location 9,656 km (= 6,000 miles)[34] Fictional location in Jonathan Swift's novel Gulliver's Travels.
TRAPPIST-1 h Exoplanet 9,900 km[35]
TRAPPIST-1 d 9,989 km[35]
TRAPPIST-1 e 11,595 km[35]
Venus Terrestrial Planet 12,103 km
Earth 12,742 km
TRAPPIST-1 f Exoplanet 13,328 km[35]
TRAPPIST-1 c 13,592 km[35]
TRAPPIST-1 b 14,283 km[35]
TRAPPIST-1 g 14,627 km[35]
Kapteyn b Exoplanet 20,387.2 km
Kepler-22 b 25,993,68 km[36]
Planet Nine Ice Giant 43,200 km
Neptune 49,244 km
Uranus 50,724 km
Saturn Gas Giant 116,464 km
EBLM J0555-57Ab Red Dwarf 118,000 km[37] This is the smallest known star, as of 2018.
2MASS J0523-1403 120,000 km[38][39]
SSSPM J0829-1309 122,600 km[39]
Jupiter Gas Giant 139,822 km
TRAPPIST-1 Red Dwarf 158,800[40] km Hosts 3 potentially Earth-like planets. All 7 planets orbiting this star are listed above for comparison.
OGLE-TR-122B 162,220[41] km
Luyten 726-8 (A and B) 190,000[42] km
Proxima Centauri 202,000[43] km The closest star to the Sun.
Wolf 359 222,800[44] km
Ross 248 222,800[45] km
Barnard's Star 272,000[43] km
CM Draconis B 334,000 [46] km
Ross 154 337,000[47] km
CM Draconis A 352,000[46] km
Kapteyn's Star 406,000 [43] km The closest Halo star to the Sun.[48]
Luyten's Star 487,000[49] km
Lalande 21185 547,000[50] km
Lacaille 9352 640,000[51] km
Tau Ceti Yellow Dwarf 1,104,000 km[52]
Sun 1,392,784 km
Chara 1,564,000 km[53]
Alpha Centauri
  • 1,708,000 km (A)
  • 1,204,000 km (B)


Sirius A White Dwarf 2,383,000 km Brightest star in the night sky.
Vega 3,928,000 km
Regulus Blue Main Sequence 4,306,000 km[55]
Spica 10,306,000 km
Pollux Orange Giant 11,140,000 km
For a size comparison between several notable and large stars, see the List of Largest Stars
Orbit of Uranus Orbit ~6,000,000,000 km
Orbit of Neptune ~9,000,000,000 km
TON 618 Central Black Hole Supermassive black hole 390,600,000,000 km Largest known black hole. It is located in an extremely luminous quasar.
Stingray Nebula Nebula ~757,600,000,000 km
Cat's Eye Nebula ~1,894,000,000,000 km
NGC 6826 2,083,400,000,000 km
Light year (9,470,000,000,000 kilometers)
Dumbbell Nebula Nebula 1.44 light years
Oort Cloud Region of Comets 2 light years Defines the outermost edge of the Solar System.
Crab Nebula Nebula 10 light years Also known as Messier 1.
Pillars of Creation 11 light years
Great Orion Nebula 24 light years
Pleiades Star Cluster 44 light years
Lagoon Nebula Nebula 110 light years
Great Rift Galaxy Arm 300 light years
Carina Nebula Nebula 460 light years It contains the Eta Carinae star system.
NGC 604 Nebula 1,520 light years Largest known H II region.
Small Magellanic Cloud Galaxy 7,000 light years
Sagittarius Dwarf Galaxy 8,000 light years
Large Magellanic Cloud 14,000 light years Nearest galaxy to the Milky Way.
Whirlpool Galaxy 60,000 light years[56]
Triangulum Galaxy 70,000 light years Farthest object visible to the naked eye.
Black Eye Galaxy 85,000 light years
Milky Way 105,000 light years
Cartwheel Galaxy 150,000 light years
Pinwheel Galaxy 175,000 light years
NGC 1232 200,000 light years
Andromeda Galaxy 220,000 light years
Virgo A 250-490,000 light years
Comet Galaxy 600,000 light years
Malin 1 650,000 light years The largest spiral galaxy known.
cD Galaxy[citation needed] NGC 4889 1,600,000 light years[57]
IC 1101 4,000,000 light years The largest singular object in the entire universe. This galaxy contains about 400,000,000,000 stars.
Local Group Galaxy Cluster 10,000,000 light years[58]
Virgo Cluster 30,000,000 light years This cluster contains approximately 1,500 galaxies.[59]
Laniakea Supercluster 520,000,000 light years
Observable Universe Region of the entire Universe 93,000,000,000 light years


  1. ISBN 3527405038
  2. ISBN 3527405038
  3. ISBN 0443016577
  6. GT describes them to be "as tall as a church steeple". This has been widely interpreted as around 22 meters.
  10. The elevation given here was determined by the 1971–73 Australian Universities' Expedition and is supported by the Seven Summits authorities and modern high resolution radar data. An older but still often quoted elevation of 5,030 metres (16,503 ft) is obsolete.
  24. Britt et al. 2002, p. 486
  34. As described in the book.
  35. 35.0 35.1 35.2 35.3 35.4 35.5 35.6
  37. , , and bibcode= 2017arXiv170608781V
  39. 39.0 39.1 doi= 10.1088/0004-6256/147/5/94
  41. and and doi= 10.1051/0004-6361:200500025
  42. bibcode=2000A&A...364..217D}}
  43. 43.0 43.1 43.2 B.-O. Demory; D. Segransan; T. Forveille; D. Queloz; J.-L. Beuzit; X. Delfosse; E. Di Folco; P. Kervella et al. (2 June 2009). "Mass-radius relation of low and very low-mass stars revisited with the VLTI". Astronomy and Astrophysics 505 (1): 205–215. arXiv:0906.0602. Bibcode 2009A&A...505..205D. doi:10.1051/0004-6361/200911976.
  44. Doyle, J. G. et al. (1990). "Optical and infrared photometry of dwarf M and K stars". Astronomy and Astrophysics 235 (1-2): 335–339. Bibcode 1990A&A...235..335D.
  45. Johnson, H. M.; Wright, C. D. (November 1983). "Predicted infrared brightness of stars within 25 parsecs of the Sun". Astrophysical Journal Supplement Series 53: 643–711, 705. Bibcode 1983ApJS...53..643J. doi:10.1086/190905.
  46. 46.0 46.1 J.C. Morales; I. Ribas; C. Jordi; G. Torres; J. Gallardo; E.F. Guinan; D. Charbonneau; M. Wolf et al. "Absolute properties of the low-mass eclipsing binary CM Draconis". The Astrophysical Journal 691 (2): 1400–1411. arXiv:0810.1541. Bibcode 2009ApJ...691.1400M. doi:10.1088/0004-637X/691/2/1400.
  47. Johnson, H. M.; Wright, C. D. (1983), "Predicted infrared brightness of stars within 25 parsecs of the sun", Astrophysical Journal Supplement Series 53: 643–711, Bibcode 1983ApJS...53..643J, doi:10.1086/190905—see p. 693.
  49. doi=10.1086/340570
  50. Demory, B.-O. et al. (October 2009), "Mass-radius relation of low and very low-mass stars revisited with the VLTI", Astronomy and Astrophysics 505 (1): 205–215, arXiv:0906.0602, Bibcode 2009A&A...505..205D, doi:10.1051/0004-6361/200911976
  51. doi=10.1051/0004-6361/200911976
  54. (for both stars).
  57. Calculating with the angular diameter and distance: is