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File:Jupiter.Aurora.HST.UV.jpg

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Original file(2,842 × 1,617 pixels, file size: 503 KB, MIME type: image/jpeg)

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This is a spectacular NASA Hubble Space Telescope close-up view of an electric-blue aurora that is eerily glowing one half billion miles away on the giant planet Jupiter. Auroras are curtains of light resulting from high-energy electrons racing along the planet's magnetic field into the upper atmosphere. The electrons excite atmospheric gases, causing them to glow. The image shows the main oval of the aurora, which is centered on the magnetic north pole, plus more diffuse emissions inside the polar cap.

Though the aurora resembles the same phenomenon that crowns Earth's polar regions, the Hubble image shows unique emissions from the magnetic "footprints" of three of Jupiter's largest moons. (These points are reached by following Jupiter's magnetic field from each satellite down to the planet).

Auroral footprints can be seen in this image from Io (along the left hand limb), Ganymede (near the center), and Europa (just below and to the right of Ganymede's auroral footprint). These emissions, produced by electric currents generated by the satellites, flow along Jupiter's magnetic field, bouncing in and out of the upper atmosphere. They are unlike anything seen on Earth.

This ultraviolet image of Jupiter was taken with the Hubble Space Telescope Imaging Spectrograph (STIS) on November 26, 1998. In this ultraviolet view, the aurora stands out clearly, but Jupiter's cloud structure is masked by haze. This image was taken in UV light at 140 nm.
Date Taken on 26 November 1998
Source http://hubblesite.org/newscenter/archive/releases/2000/38/image/a/; see also https://www.spacetelescope.org/images/heic0009a/ and http://apod.gsfc.nasa.gov/apod/ap001219.html
Author NASA, ESA & John T. Clarke (Univ. of Michigan)
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This image or video was catalogued by one of the centers of the United States National Aeronautics and Space Administration (NASA) under Photo ID: STScI-2000-38 and Alternate ID: heic0009a.

This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing.
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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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26 November 1998

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Date/TimeThumbnailDimensionsUserComment
current01:14, 16 February 2017Thumbnail for version as of 01:14, 16 February 20172,842 × 1,617 (503 KB)Geageafrom he.wiki --> https://he.wikipedia.org/wiki/%D7%A7%D7%95%D7%91%D7%A5:Satellite_Footprints_Seen_in_Jupiter_Aurora.jpg
12:21, 16 September 2008Thumbnail for version as of 12:21, 16 September 2008752 × 417 (290 KB)RupertMillardUploading higher quality version from: http://hubblesite.org/newscenter/archive/releases/2000/38/image/a/
12:17, 16 September 2008Thumbnail for version as of 12:17, 16 September 2008752 × 417 (290 KB)RupertMillard{{Information |Description= |Source= |Date= |Author= |Permission= |other_versions= }}
23:44, 1 January 2007Thumbnail for version as of 23:44, 1 January 2007789 × 451 (179 KB)Wdflake~commonswikiRemoved border and caption, as is the policy on enwiki
09:41, 11 August 2005Thumbnail for version as of 09:41, 11 August 2005800 × 514 (33 KB)Kurgus''NASA image of Jupiter aurora in UV, Hubble Space Telescope'' Bright streaks and dots are caused by magnetic flux tubes connecting Jupiter to its largest moons: * Io: bright streak on the far left * Ganymede: bright dot below center * Europa: dot right
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