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{{Orders of magnitude (length) imagemap astronomical-scale}} |
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[[Image:1e9m comparison.png|thumb|350px|right|Upper part: [[Gamma Orionis]], [[Algol|Algol B]], the [[Sun]] (centre), underneath their darker mirror images <span style="white-space:nowrap;">(artist's interpretation),</span> and <span style="white-space:nowrap;">[[1 E8 m|other objects]],</span> to scale.]] |
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To help compare different distances this page lists lengths starting at 10<sup>9</sup> [[metre]]s (1 [[gigametre]] (Gm) or 1 million [[kilometre]]s). |
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'''[[1 E+8 m|Distances shorter than 10<sup>9</sup> metres]]''' |
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* 1.4 Gm — Diameter of [[Sun]]<ref>[http://nssdc.gsfc.nasa.gov/planetary/factsheet/sunfact.html Sun Fact Sheet]</ref> |
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* 1.5 Gm — ''(proposed) Expected orbit from Earth of the [[James Webb Space Telescope]]'' |
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* 2.19 Gm — Closest approach of [[Comet Lexell]] to [[Earth]], happened on 1 July 1770; closest [[comet]] approach on record |
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* 3 Gm — Total length of "wiring" in the human brain.<ref>Neuroscience: The Science of the Brain [http://www.braincampaign.org/Pub/Pub_Main_Display.asp?LC_Docs_ID=2769] p.44</ref> |
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* 4.2 Gm — Diameter of [[Algol|Algol B]] |
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* 5.0 Gm — Closest approach of [[Comet Halley]] to Earth, happened on 10 April 837 |
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* ''5.0 Gm — (proposed) Size of the arms of the giant triangle shaped Michelson interferometer of the [[Laser Interferometer Space Antenna]] (LISA) planned to start observations in or around 2015.'' |
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* 7.9 Gm — Diameter of [[Gamma Orionis]] |
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* 9.0 Gm — Estimated diameter of the [[event horizon]] of [[Sagittarius A*]], the [[supermassive black hole]] in the center of the [[Milky Way]] galaxy |
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'''[[1 E+10 m|Distances longer than 10<sup>10</sup> metres]]''' |
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==References== |
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{{Reflist}} |
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{{Associations/Orders of magnitude (length) wide}} |
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[[Category:Orders of magnitude (length)|+09]] |
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Revision as of 08:29, 10 December 2014
Template:Orders of magnitude (length) imagemap astronomical-scale
To help compare different distances this page lists lengths starting at 109 metres (1 gigametre (Gm) or 1 million kilometres).
Distances shorter than 109 metres
- 1.4 Gm — Diameter of Sun[1]
- 1.5 Gm — (proposed) Expected orbit from Earth of the James Webb Space Telescope
- 2.19 Gm — Closest approach of Comet Lexell to Earth, happened on 1 July 1770; closest comet approach on record
- 3 Gm — Total length of "wiring" in the human brain.[2]
- 4.2 Gm — Diameter of Algol B
- 5.0 Gm — Closest approach of Comet Halley to Earth, happened on 10 April 837
- 5.0 Gm — (proposed) Size of the arms of the giant triangle shaped Michelson interferometer of the Laser Interferometer Space Antenna (LISA) planned to start observations in or around 2015.
- 7.9 Gm — Diameter of Gamma Orionis
- 9.0 Gm — Estimated diameter of the event horizon of Sagittarius A*, the supermassive black hole in the center of the Milky Way galaxy
Distances longer than 1010 metres
References
- ^ Sun Fact Sheet
- ^ Neuroscience: The Science of the Brain [1] p.44