Datoteka:Multispectral Triangulum Galaxy (4 Channels).jpg

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English: This image is a blend of the Galaxy Evolution Explorer's M33 image and another taken by NASA's Spitzer Space Telescope. M33, one of our closest galactic neighbors, is about 2.9 million light-years away in the constellation Triangulum, part of what's known as our Local Group of galaxies.

Together, the Galaxy Evolution Explorer and Spitzer can see a broad spectrum of sky. Spitzer, for example, can detect mid-infrared radiation from dust that has absorbed young stars' ultraviolet light. That's something the Galaxy Evolution Explorer cannot see. This combined image shows in amazing detail the beautiful and complicated interlacing of the heated dust and young stars. In some regions of M33, dust gathers where there is very little far-ultraviolet light, suggesting that the young stars are obscured or that stars further away are heating the dust. In some of the outer regions of the galaxy, just the opposite is true: There are plenty of young stars and very little dust.

Far-ultraviolet light from young stars glimmers blue, near-ultraviolet light from intermediate age stars glows green, near-infrared light from old stars burns yellow and orange, and dust rich in organic molecules burns red. The small blue flecks outside the spiral disk of M33 are most likely distant background galaxies. This image is a four-band composite that, in addition to the two ultraviolet bands, includes near infrared as yellow/orange and far infrared as red.
Datum
Izvor http://www.spitzer.caltech.edu/images/2046-sig09-004-Multispectral-Triangulum-Galaxy-4-Channels-
Autor NASA/JPL-Caltech

Image use policy: http://www.spitzer.caltech.edu/info/18-Image-Use-Policy

Licenciranje

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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5 juni 2009

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Datum/vrijemeMinijaturaDimenzijeKorisnikKomentar
aktualna23:54, 13 juni 2011Minijatura verzije (23:54, 13 juni 2011)2.228 × 3.462 (7,35 MB)Spitzersteph

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