Solar System model

Quality 0.50 · 1 view · Updated 2 months ago

Illustration of the relative positions of the Sun and planets

title: "Solar System model" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["solar-system", "physics-education", "scale-modeling", "solar-system-models"] description: "Illustration of the relative positions of the Sun and planets" topic_path: "science/astronomy" source: "https://en.wikipedia.org/wiki/Solar_System_model" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::summary Illustration of the relative positions of the Sun and planets ::

::figure[src="https://upload.wikimedia.org/wikipedia/commons/b/bf/Planetarium_in_Putnam_Gallery_2,_2009-11-24.jpg" caption="A 1766 Benjamin Martin mechanical model, or [[orrery]], on display at the [[Harvard Collection of Historical Scientific Instruments"] ::

Solar System models, especially mechanical models, called orreries, that illustrate the relative positions and motions of the planets and moons in the Solar System have been built for centuries. While they often showed relative sizes, these models were usually not built to scale. The enormous ratio of interplanetary distances to planetary diameters makes constructing a scale model of the Solar System a challenging task. As one example of the difficulty, the distance between the Earth and the Sun is almost 12,000 times the diameter of the Earth.

If the smaller planets are to be easily visible to the naked eye, large outdoor spaces are generally necessary, as is some means for highlighting objects that might otherwise not be noticed from a distance. The Boston Museum of Science had placed bronze models of the planets in major public buildings, all on similar stands with interpretive labels. For example, the model of Jupiter was located in the cavernous South Station waiting area. The properly-scaled, basket-ball-sized model is 1.3 miles (2.14 km) from the model Sun which is located at the museum, graphically illustrating the immense empty space in the Solar System.

The objects in such large models do not move. Traditional orreries often did move, and some used clockworks to display the relative speeds of objects accurately. These can be thought of as being correctly scaled in time, instead of distance.

Permanent true scale models

Many towns and institutions have built outdoor scale models of the Solar System. Here is a table comparing these models with the actual system.

::data[format=table] | Name | Location | Scale: 1 : … | Sun dia. | Earth dia. | Sun–Earth | Sun–Pluto | Description | |---|---|---|---|---|---|---|---| | Actual Solar System | 1 | 1.392 million km | 12,760 km | 149.6 million km | 5.914 billion km | | | | Sweden Solar System | Sweden Stockholm, Sweden | 20,000,000 | 71 m | 65 cm | 7,600 m | 300 km | permanent; country-wide (begun 1998) | | Solar System Drive | Australia Coonabarabran, Australia | 38,000,000 | 37 m | 34 cm | 4,100 m | 205 km | permanent; drivable; non-geodetic (est. 1997) | | Space for MUCO project | Belgium | 40,000,000 | 34.8 m | 32 cm | 3,730 m | 147 km | permanent; country wide; non-scale sculptures (est. 2004) | | The North American Solar System Model | Canada | 44,148,400 | 31.53 m | 28.8 cm | 3,389 m | 133.1 km | permanent; giants-drivable. Terrestrials-walkable. (est. 2025, still under construction) | | Maine Solar System | USA Presque Isle, Maine | 93,000,000 | 15 m | 13.7 cm | 1,600 m | 64 km | permanent; drivable (est.2003) | | Mont Megantic Dark Sky Reserve Great Solar System | Canada Parc national du Mont-Mégantic, Canada | 100,000,000 | 14 m | 12.4 cm | 1,450 m | 57 km | permanent; drivable (est.2018) | | Otago Central Interplanetary Cycle Trail | New Zealand Otago Central Rail Trail, New Zealand | 100,000,000 | 13.91 m | 12 cm | 1,496 m | 59.06 km | permanent; cyclable (est.2017) | | Riverfront Museum Solar System | USA Peoria, Illinois | 99,000,000 | 11 m | 10.0 cm | 1,200 m | 47 km | permanent; drivable (est. 1992?) | | Vienna Solar System | Austria Vienna, Austria | 163,764,706 | 8.5 m | 7.78 cm | 913 m | 36 km | under construction since 2018. Physical + Augmented Reality | | Planet Lofoten | Norway Lofoten, Norway | 200,000,000 | 7 m | 6.4 cm | 750m | 30 km | under construction | | Planet Trek Dane County | USA Madison, Wisconsin | 200,000,000 | 7 m | 6.6 cm | 777 m | 38.3 km | permanent; fully accessible by foot and bike paths (est. 2009) | | Sunspot Solar System Model | US Sunspot, New Mexico | 250,000,000 | 5.6 m | 5.1 cm | 1.5 m | 23.6 km | permanent, drivable | | Lethbridge Solar System Model | Canada Lethbridge, Alberta, Canada | 254,000,000 | 5.5 m | 5 cm | 500 m | 14.7 km (Neptune) | permanent, drivable, walkable (est. 2022) | | El Sistema Solar de la comarca de Ciudad Rodrigo | Spain Ciudad Rodrigo, Spain | 290,000,000 | 4.8 m | 4.4 cm | 1.2 m | 25 km | permanent, Walk & Drive | | If the Earth were a Ping-Pong ball | UK Westminster, London | 318,905,000 | 4.36 m | 4 cm | ? | ? | In construction; Walk & Drive (est. 2018) Centered around Deans Yard, Westminster | | Moab Scale Model of the Solar System | USA Moab, Utah | 385,937,677 | 3.6 m | 2.4 cm | ? | 15.3 km | permanent; Walk and Drive (est. 2007) | | Light Speed Planet Walk | USA Anchorage, Alaska | 390,000,000 | ? | ? | ? | 16.6 km | permanent; drivable (est. 2005) | | The Solar System to Scale | Portugal Estremoz, Portugal | 414,000,000 | 3.4 m | 3.1 cm | 361 m | 14.3 km | permanent; drivable; bikeable | | Solar System Stroll | Slovakia Bratislava, Slovakia | 464,000,000 | 3 m | 2.7 cm | 322 m | 13 km | permanent; bikeable, drivable; under construction since 2024 | | Somerset Space Walk | UK Bridgwater Canal, Somerset, England | 530,000,000 | 2.5 m | ? | ? | 11 km | permanent; bikeable (est. 1997) | | York's Solar System model | UK York, England | 575,872,239 | 2.4 m | 2.2 cm | 260 m | 10.3 km | permanent; bikeable (est. 1999) | | Traverse Bay Community Solar System | USA Traverse City, Michigan | 592,763,356 | 0.9 m | ? | 209 m | 10.0 km | permanent; bikeable (est. 2004) | | Michigan Solar System Model | USA Coleman, Michigan | 608,000,000 | 2.3 m | 2.1 cm | 324 m | 9.8 km | permanent; bike trail Sun and Pls. Spheres (2017) | | Solar System | Czech Republic Opava, Czech Republic | 627,000,000 | 2.2 m | 2.0 cm | 239 m | 9.42 km | permanent; bikeable; walkable; drivable (est. 2006) | | Nine Views | Croatia Zagreb, Croatia | 680,000,000 | 2.0 m | 1.9 cm | 225 m | 8.7 km | permanent; bikeable (est. 2004) | | Walk the Solar System | Canada Fort St. John, British Columbia, Canada | 682,353,000 | 2.0 m | 1.9 cm | 219 m | 8.6 km | under construction | | McCarthy Observatory | USA New Milford, Connecticut | 761,155,000 | 1.8 m | 1.7 cm | 195 m | 7.1 km | permanent; bikeable (est. 2009) | | Planet Walk | USA Glen Burnie, Maryland. | 781,000,000 | ? | ? | 191.5 m | 7.56 km | Walkable, bikeable (est. 2008). Part of the permanent Baltimore & Annapolis Trail. | | Trilho do Sistema Solar | Portugal Paredes de Coura, Portugal | 831,000,000 | 1.675 m | 1.533 cm | 180 m | 5.42 km (Neptune) | permanent; walkable; bikeable (est. 2016) | | Planetenpad Utrecht | Netherlands Utrecht, The Netherlands | 1,000,000,000 | 1.3 m | 1.3 cm | 150 m | 7.4 km (Neptune) | Leads from Centre Utrecht to Rhijnauwen, on foot, on bike or on kayak | | Model of the Solar System | Finland Helsinki, Finland | 1,000,000,000 | 1.4 m | 1.2 cm | 149.6 m | 6.1 km | permanent; bikeable | | Planetenmodell Hagen | Germany Hagen, Germany | 1,000,000,000 | 1.4 m | 1.3 cm | 150 m | 5.9 km | permanent; bikeable (est. 1959) | | Planetenweg Schwarzbach | Germany Kriftel, Germany | 1,000,000,000 | 1.4 m | 1.3 cm | 150 m | 5.9 km | permanent; bikeable (est. 1998) | | Uetliberg Planetenweg | Switzerland Zürich, Switzerland | 1,000,000,000 | 1.4 m | 1.3 cm | 150 m | 5.9 km | permanent; bikeable | | Planetenwanderweg | Germany Ehrenfriedersdorf, Germany | 1,000,000,000 | 1.4 m | 1.3 cm | 150 m | 5.9 km | permanent; bikeable | | Planetary Trail | Czech Republic Hradec Králové, Czech Republic | 1,000,000,000 | 1.4 m | 1.3 cm | 150 m | 5.9 km | permanent; bikeable (est. 2005) | | Planetary Trail | Czech Republic Prague, Czech Republic | 1,000,000,000 | 1.4 m | 1.3 cm | 150 m | 13 km (Sedna as discovered) 5.9 km (Pluto) | permanent; bike & walk; all objects above 1000km; (est. 13.5.2018) | | Melbourne Solar System | Australia Melbourne, Australia | 1,000,000,000 | 1.4 m | 1.3 cm | 150 m | 5.9 km (Pluto) 40 140 km (Proxima Centauri) | permanent; bikeable (est. 2008) Proxima Centauri scale distance calculated travelling Melbourne to Melbourne via the Poles. | | Scale Model Solar System | USA Eugene, Oregon | 1,000,000,000 | 1.4 m | 1.2 cm | 150 m | 5.9 km | permanent; bikeable (est. 1997) | | Planetstien, Sandnes | Norway Sandnes, Norway | 1,000,000,000 | 1.4 m | 1.2 cm | 150 m | 5.9 km | permanent; walkable, bikeable (est. 2010) | | Planetstien, Lemvig | Denmark Lemvig, Denmark | 1,000,000,000 | 1.4 m | 1.2 cm | 150 m | 5.9 km | permanent; walkable | | Grand Trunk Pathway Solar System Model | Canada Terrace, British Columbia | 1,000,000,000 | 1.4 m | 1.3 cm | 150 m | 6 km | permanent; walkable/bikeable (est. 2018) | | Planet Walk | Germany Munich, Germany | 1,290,000,000 | 1.1 m | 1.0 cm | 116 m | 4.6 km | permanent; walkable (est. 1995) | | Strolling at the speed of light | Canada La Malbaie, Quebec, Canada | 1,500,000,000 | 0.9 m | 0.8 cm | 100 m | 3 km (Neptune) | permanent; walkable (est. 2009) (temp?) | | State of the Solar System | USA Bellingham, Washington | 1,826,770,000 | 0.762 m | 0.6858 cm | 82 m | ? | permanent; walkable (est. 2016) | | Meteoria Söderfjärden | Finland Vaasa, Finland | 2,000,000,000 | 0.7 m | ? | ? | ? | permanent; walkable | | Planetenweg Göttingen | Germany Göttingen, Germany | 2,000,000,000 | 0.70 m | 0.65 cm | 75 m | 3.2 km | permanent; walkable/bikeable (est. 2013) | | Solar System Walking Tour | USA Gainesville, Georgia | 2,000,000,000 | 0.7 m | 0.6 cm | 75 m | 2.9 km | permanent; walkable (est. 2000) | | Rymdpromenaden ("Spacewalk") | Sweden Gothenburg, Sweden | 2,000,000,000 | 0.7 m | 0.6 cm | 75 m | 3 km | permanent; walkable (est. 1978) | | Montshire Museum of Science | USA Norwich, Vermont | 2,200,000,000 | 0.6 m | 0.6 cm | 68 m | 2.7 km | permanent; walkable | | Ride to Pluto: Boise's Solar System | USA Boise Greenbelt, Boise, Idaho | 2,200,000,000 | 0.5 m | ? | ? | 2.4 km | permanent; walkable & bikeable | | The Solar walk | USA Longview, Washington | 2,240,000,000 | 0.6 m | 0.6 cm | 56.94 m | 2.7 km | permanent; walkable (est. 2001) | | Akaa Solar System Scale Model | Finland Akaa, Finland | 3,000,000,000 | 0.46 m | 0.4 cm | 49.9 m | 1.958 km (Pluto) 13 370 km (Proxima Centauri) | permanent; walkable (est. 2017), Proxima Centauri in Yulara, Australia | | Elmhurst Scale Model of the Solar System | USA Elmhurst, Illinois | 3,044,620,000 | 0.5 m | 0.4 cm | 49.1 m | 1.929 km | permanent; walk & drive (est. 2013) | | Solar System model group of sculptures | Hungary Kecskemét, Hungary | 3,300,000,000 | 0.418 m | 0.4 cm | 45 m | 1.8 km | permanent; walkable (est. 2002) | | Milky Way path | Netherlands Westerbork, The Netherlands | 3,700,000,000 | ? | ? | ? | 2.5 km | permanent; walkable | | Solar Walk | USA Gainesville, Florida | 4,000,000,000 | 0.3 m | 0.3 cm | 37.4 m | 1.5 km | permanent; walkable (est. 2002) | | Otford Solar System Model | UK Otford, England | 4,595,700,000 | 0.3 m | 0.3 cm | 32 m | 900 m | permanent; walkable; Includes: Proxima Centauri in Los Angeles, USA; Barnard's Star in Port Stanley, Falkland Islands; Sirius in Sydney, Australia; and Ross 154 in Christchurch, New Zealand | | Wooster Planet Walk | USA Wooster, Ohio | 5,000,000,000 | 0.3 m | 0.3 cm | 30 m | 1.2 km | permanent; walkable (est. 2014) | | The Sagan Planet Walk | USA Ithaca, New York | 5,000,000,000 | 0.3 m | 0.3 cm | 30 m | 1.2 km | permanent; walkable (est. 1997) | | Delmar Loop Planet Walk | USA University City, Missouri | 5,000,000,000 | 0.3 m | 0.2 cm | 30 m | 870 m (Neptune) | permanent; walkable (est. 2009) | | The Solar Walk | USA Cleveland, Ohio | 5,280,000,000 | 0.3 m | 0.2 cm | 28.4 m | 1.1 km | permanent; walkable | | Solar System Walk | USA Carlsbad, California | 5,280,000,000 | ? | ? | 28 m | 1.119 km | Located near Lake Calavera | | O Sistema Solar no Parque | Brazil Natal, Brazil | 7,000,000,000 | 0.2 m | 1.8 mm | 22 m | 875 m | permanent; walkable/bikeable (est. June 3rd, 2016) | | A True Scale Model of the Solar System | USA Cookeville, Tennessee | 10,000,000,000 | 0.14 m | 0.12 cm | 15 m | 590 m | permanent; walkable (est. 2017) | | Voyage National Program [1] | USA | 10,000,000,000 | 0.1 m | 0.1 cm | 15 m | 600 m | permanent; walkable; US national program | | Lake Innitou Thousand Yard Interplanetary Walk | USA Woburn, Massachusetts | 10,000,000,000 | 0.23 m (bowling ball) | N/A (stone plaque) | 24 m | 932 m (1019 yd) | permanent; walkable (est. 2004); along the sidewalk by Horn Pond. | | NJ Botanical Garden | USA Ringwood, New Jersey | 10,000,000,000 | 0.2 m | 2.0 cm | 23.8 m | 927 m | walkable | | Colorado Scale Model Solar System | USA Fiske Planetarium, Boulder, Colorado | 10,000,000,000 | 0.1 m | 0.1 cm | 15 m | 600 m | permanent; walkable (est. 1987) | | Anstruther Model Solar System | UK Anstruther, Scotland | 10,000,000,000 | 0.1 m | 0.1 cm | 15 m | 600 m | permanent; walkable (est. 2014) | | Le Chemin Solaire | France La Couyère, Brittany | 10,000,000,000 | 1 m | 0.1 cm | ? | 450 m | permanent; walkable (est. 2011) | | Solar Walk UofT Scarborough | Canada Toronto, Ontario and Eureka, Nunavut | 10,000,000,000 | 0.14 m | 0.13 cm | 15 m | 591 m | permanent; walkable/bikeable (est. 2017) | | title=Infinite Solar System |url=https://eaps.mit.edu/infinite-solar-system/ |website=MIT Department of Earth, Atmospheric and Planetary Sciences |publisher=Massachusetts Institute of Technology |access-date=2024-11-19}} | USA Cambridge, Massachusetts | 30,000,000,000 | 4.6 cm | 0.43 mm | 5.0 m | 200 m | permanent; walkable (est. 2018); along "Infinite Corridor" | | Solar System Lawn Model | USA Griffith Observatory, Los Angeles, California | 105,000,000,000 | 1.32 cm | 0.12 mm | 1.42 m | 56 m | permanent; walkable; engraved in the front sidewalk | ::

Other models of the Solar System: historic, temporary, virtual, or dual-scale

::data[format=table]

NameLocationScaleSun dia.Earth dia.Sun-EarthSun-PlutoDescription
Sol ChicagoUSA Illinois, Chicago1:73,660,00019 m17.3 cm2,050 m61 km (Neptune)(temporary) proposed
Community Solar System TrailUSA Boston, Massachusetts1:400,000,0003.5 m3.2 cm380 m15.3 kmpermanent; drivable (established in 1997, removed in 2015)
SorghvlietNetherlands The Hague, Netherlands1:696,000,0002.0 m1.8 cm215 m6.5 km (Neptune)(temporary)
Kirkhill model 1776Scotland Scotland1:778,268,620.81.8 m1.6 cm197 m-decayed
Planetenpad UtrechtNetherlands Utrecht, Netherlands1:1,000,000,0001.3 m1.3 cm150 m7.4 km (Neptune)Leads from Centre Utrecht to Rhijnauwen, on foot, on bike or by kayak
Le Chemin des planètesSwitzerland Saint-Luc, Switzerland1:1,000,000,0001.4 m1.3 cm150 m5.9 kmuses two different scales for distance and size
Planets on the PathUSA Chicago, Illinois1:2,195,000,000457 m13.5 miles(2015, temporary)
Naas Virtual Solar SystemIreland Naas, County Kildare1 : 154,557,3309 m82 mm968 m29 km (Neptune)In Ireland, this instantly recognisable roadside spherical sculpture is well known, and is used as the model for the Sun. The website maps out the planetary orbits and shows everyday objects to scale the planets (e.g. a golf ball for Mars)
Eise Eisinga VisvlietNetherlands Visvliet, The Netherlands1: 870,000,000160 cm1.5 cm172 mn/aPermanent installation honouring Eise Eisinga, the creator of the world famous Planetarium in Franeker, who lived in Visviet in 1700. As the original Planetarium only includes the planets up to Saturn, so does this one.
Saskatoon Solar WalkSaskatoon, Saskatchewan1 : 1,275,600,000109 cm1 cm110 m4,500 mPersonal and public art installation created by Roman Rabbitskin in 2023
Planet Walk Maltahttps://www.um.edu.mt/library/oar/bitstream/123456789/23757/1/Science%20with%20a%20difference%20HSci%202005.pdfMalta Buġibba, Malta1:2,956,760,000 (distance) / 695,000,000 (sizes)2.0 m1.84 cm50.60 m2.0 km (Neptune)Leads from Malta Aquarium west along promenade
The Madison Planet StrollUSA Madison, Wisconsin1:4,000,000,0000.3 m0.3 cm37 m1.5 km(virtual)
Solar System StrollAustralia Perth, Western Australia1:5,000,000,0000.3 m0.3 cm30 m1.2 kmpermanent; walkable (est. 2016)
The Thousand-Yard Model(virtual)1:6,336,000,0000.2 m0.2 cm25 m1 kmThe scale of the planets is the same as the scale between them, and the planets are represented by everyday objects; the Earth is a peppercorn, Jupiter is a walnut, and Neptune is a coffee bean.
Lafayette WalkUSA Detroit, Michigan1:6,336,000,00023 cm0.2 cm25 m983 mA walking demonstration of (un)imaginable distances. "It's nowhere near Graham's Number."
(dismantled)Canada Saint-Louis-du-Ha! Ha!, Quebec1:10,000,000,0000.1 m0.1 cm15 m0.6 km(dismantled) (est. 1985)
The Solar System, to scale, for a school yardPDF for printing1:11,945,400,00011.6 cm0.1 cm12.5 m492 mPDFs, A4 and 8½″×11″, to be printed, affixed to cards which are affixed to sticks; then to be held by children standing in a school yard. Includes major moons and asteroids.
::

Several sets of geocaching caches have been laid out as Solar System models.

References

References

  1. "[https://www.waymarking.com/waymarks/WM7R8M_Boston_Community_Solar_System_Sun_Boston_MA Boston Community Solar System]" at Waymarking.com.
  2. "Sweden Solar System {{!}}".
  3. "Worlds Largest Virtual Solar System Drive".
  4. (5 November 2012). "Coonabarabran: The world's largest solar system drive".
  5. "Monumental".
  6. Bayly, Julia. (2021-08-18). "Here's how you can visit the solar system in Maine, no rocket ship required".
  7. "Maine Solar System Model".
  8. Jones, Pam. (2017-03-16). "Solar system to scale on Rail Trail".
  9. Williams, Katarina. (2016-11-12). "Otago Central rail trail to become 100 million to one model replica of the Solar System".
  10. "An Interplanetary Ride".
  11. "Community Solar System Scale Model {{!}} Museum & Informal Education Alliance".
  12. Schoenheider, Jon. (26 March 2022). "Interplanetary 5K takes runners across the solar system".
  13. "Community Solar System".
  14. "Peoria Scale Model of the Solar System".
  15. "naturfag.no: Planet Lofoten".
  16. "Sunspot Solar System Model".
  17. "Sunspot Solar System Model".
  18. (19 December 2022). "VISITING THE SUNSPOT OBSERVATORY".
  19. "An Overview of Sunspot".
  20. "Moab Scale Model Solar System".
  21. "Where to start your Planet Walk".
  22. "Solar System Stroll website".
  23. "Solar System".
  24. "SOLAR SYSTEM SCULPTURE INSTALLMENT".
  25. "Scale Solar System".
  26. "Annual Planet Walk!".
  27. museumoflost. (2018-04-05). "The St Kilda Solar System".
  28. "Nick visits the Melbourne Solar System trail, finds six planets, loses Neptune and takes a surprise trip to Proxima Centauri".
  29. "Solar system trail".
  30. "Outer Planet Map".
  31. (5 October 2016). "STATE OF THE SOLAR SYSTEM".
  32. "State of the Solar System Poster".
  33. (25 May 2022). "What's the Deal With: The downtown solar system?".
  34. "WALKING TOUR OF OUR SOLAR SYSTEM".
  35. "Solar System Walking Tour".
  36. "Solar System Walking Tour".
  37. "Planet Walk (3.0 miles roundtrip)".
  38. "Greenbelt's little-known Planet Walk shows solar system's scale".
  39. "Solar System Walk".
  40. "SOLAR SYSTEM MAP".
  41. (20 November 2013). "Elmhurst Residents Can Boldly Go Where No One Has Gone Before".
  42. "ELMHURST SOLAR SYSTEM MODEL".
  43. "UNESCO Astronomy and World Heritage Webportal - Places connected to the Sky".
  44. (2 June 2016). "O Sistema Solar no Parque".
  45. "A True Scale Model of the Solar System".
  46. "Building a True Scale Model of the Solar System".
  47. (27 November 2017). "The Voyage Scale Model Solar System".
  48. Bennett, J.. (2020-01-01). "Voyage Mark II — Scale Model Solar Systems at Moderate Prices". American Astronomical Society Meeting Abstracts #235.
  49. "Infinite Solar System". Massachusetts Institute of Technology.
  50. (October 24, 2019). "Corralling the cosmos in the Infinite Corridor".
  51. (November 16, 2018). "An Infinite solar system". Massachusetts Institute of Technology.
  52. "Solar System Lawn Model".
  53. "Sol Chicago".
  54. (8 January 2011). "Sol Chicago".
  55. (15 August 2021). "Greater Boston used to have a scale model of the Solar System".
  56. "Museum of Science Boston Community Solar System".
  57. "Naas Solar System".
  58. Visvliet, Eise Eisinga. "Eise Eisinga Visvliet – Visvliet.com".
  59. "Welcome to The Madison Planet Stroll".
  60. "The Thousand-Yard Model, or, The Earth as a Peppercorn".
  61. "The Thousand-Yard Model, or, The Earth as a Peppercorn".

::callout[type=info title="Wikipedia Source"] This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page. ::

solar-systemphysics-educationscale-modelingsolar-system-models