Fayl:Polycyclic Aromatic Hydrocarbons In Space.jpg

(6.000 × 4.500 piksel, fayl həcmi: 4,52 MB, MIME növü: image/jpeg)

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Two extremely bright stars illuminate a greenish mist in this image from the "GLIMPSE360" survey. This mist is comprised of hydrogen and carbon compounds called polycyclic aromatic hydrocarbons (PAHs), which also are found here on Earth in sooty vehicle exhaust and on charred grills. In space, PAHs form in the dark clouds that give rise to stars. These molecules provide astronomers a way to visualize the peripheries of gas clouds and study their structures in great detail. They are not actually green; but are color coded in these images to allow scientists see their glow in infra-red.

This image is a combination of data from Spitzer and the Two-Micron All-Sky Survey (2MASS).
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Müəllif NASA/JPL-Caltech/2MASS/SSI/University of Wisconsin

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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, or .)
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təsvir edir

28 iyul 2010

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