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The Scale of the Heliosphere and Nearby Galactic Neighborhood

The solar system and its nearby galactic neighborhood are illustrated here on a logarithmic scale extending (from < 1 to) 1 million Astronomical Units (AU). Our Sun and its planets are shielded by a bubble of solar wind - the heliosphere - that is about 120 AU in size. The actual boundary between solar wind and interstellar plasma is called the heliopause. Beyond this bubble is a largely unknown region - the interstellar medium. Threaded through the boundaries of the heliosphere is the Kuiper Belt - the source of short-period comets. The nearest edge of the interstellar cloud that presently surrounds our solar system is thought to be several thousand AU away. The Oort Cloud is a spherical shell of comets extending from <10,000 to ~100,000 AU - the edge of our Sun's gravitational sphere of influence. Alpha-Centauri, the best known member of our nearest star system, lies well beyond at ~300,000 AU. Interstellar Probe is to be man's first spacecraft designed to exit the heliosphere and begin the exploration of the interstellar medium. NOTE: the bow shock depicted here probably does not exist.
Source http://interstellar.jpl.nasa.gov/interstellar/probe/introduction/scale.html
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Public domain This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
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The original description page was here. All following user names refer to en.wikipedia.
  • 2007-11-28 18:34 Tene 1000×605×8 (323246 bytes) [http://interstellar.jpl.nasa.gov/interstellar/probe/introduction/scale.html source] Intended as a replacement for [[Image:Solarmap.gif]] {{PD-USGov-NASA}}

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Date/TimeThumbnailDimensionsUserComment
current20:00, 3 July 2019Thumbnail for version as of 20:00, 3 July 2019605 × 1,000 (303 KB)SteinsplitterBotBot: Image rotated by 90°
20:18, 9 June 2008Thumbnail for version as of 20:18, 9 June 20081,000 × 605 (316 KB)Sir48{{Information |Description={{en|[http://interstellar.jpl.nasa.gov/interstellar/probe/introduction/scale.html source] Intended as a replacement for [[:en::Image:Solarmap.gif]]}} |Source=Transferred from [http://en.wikipedia.org en.wikipedia]; transfer was

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