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File:Io Aurorae color.jpg

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Io_Aurorae_color.jpg (374 × 350 pixels, file size: 143 KB, MIME type: image/jpeg)

Summary

Description
English: This eerie view of Jupiter's moon Io in eclipse (left) was acquired by NASA's Galileo spacecraft while the moon was in Jupiter's shadow. Gases above the satellite's surface produced a ghostly glow that could be seen at visible wavelengths (red, green, and violet). The vivid colors, caused by collisions between Io's atmospheric gases and energetic charged particles trapped in Jupiter's magnetic field, had not previously been observed. The green and red emissions are probably produced by mechanisms similar to those in Earth's polar regions that produce the aurora, or northern and southern lights. Bright blue glows mark the sites of dense plumes of volcanic vapor, and may be places where Io is electrically connected to Jupiter.

North is to the top of the picture, and Jupiter is towards the right. The resolution is 13.5 kilometers (8 miles) per picture element. The images were taken on May 31, 1998 at a range of 1.3 million kilometers (800,000 miles) by Galileo's onboard solid state imaging camera system during the spacecraft's 15th orbit of Jupiter.
Date
Source Adapted from http://photojournal.jpl.nasa.gov/catalog/PIA01637
Author NASA/JPL/University of Arizona

Licensing

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.
  • 2007-05-25 20:23 Volcanopele 374×350× (88498 bytes) Adapted from NASA image release [http://photojournal.jpl.nasa.gov/catalog/PIA01637 PIA01637] Original caption: This eerie view of Jupiter's moon Io in eclipse (left) was acquired by NASA's Galileo spacecraft while the moon was in Jupiter's shadow. Gases

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31 May 1998

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Date/TimeThumbnailDimensionsUserComment
current23:00, 6 March 2014Thumbnail for version as of 23:00, 6 March 2014374 × 350 (143 KB)Scanmapreencoded from lossless source without black border line, more pixels and in better quality
00:21, 21 April 2009Thumbnail for version as of 00:21, 21 April 2009374 × 350 (86 KB)Yned{{Information |Description={{en|Adapted from NASA image release [http://photojournal.jpl.nasa.gov/catalog/PIA01637 PIA01637] Original caption: This eerie view of Jupiter's moon Io in eclipse (left) was acquired by NASA's Galileo spacecraft while the moo

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