1 gigametre: Difference between revisions

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To help compare different distances this page lists lengths starting at 10⁹ metres (1 gigametre (Gm) or 1 billion 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

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 {{Orders of magnitude (length) imagemap astronomical-scale}}
 [[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.]]