File:Helix Nebula in infrared (captured by the Spitzer Space Telescope).tif

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Description The Helix Nebula, which is composed of gaseous shells and disks puffed out by a dying sun-like star, exhibits complex structure on the smallest visible scales. In this new image from NASA's Spitzer Space Telescope, infrared light at wavelengths of 3.6, 4.5, and 8.0 microns has been colored blue, green, and red (respectively). The color saturation also has been increased to intensify hues. The cometary knots show blue-green heads due to excitation of their molecular material from shocks or ultraviolet radiation. The tails of the cometary knots appear redder due to being shielded from the central star's ultraviolet radiation and wind by the heads of the knots.
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Source http://www.spitzer.caltech.edu/images/1533-ssc2006-01a1-Infrared-Helix (direct link)
Author NASA/JPL-Caltech/J. Hora (Harvard-Smithsonian CfA)
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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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current14:29, 31 December 2011Thumbnail for version as of 14:29, 31 December 20112,977 × 3,465 (21.42 MB)Prof. Professorson (talk | contribs){{Information |Description=The en:Helix Nebula, which is composed of gaseous shells and disks puffed out by a dying sun-like star, exhibits complex structure on the smallest visible scales. In this new image from NASA's [[:en:Spitzer Space Telescope

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