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ssc2004-10b
Old and 'Red' Distant GalaxiesThis image provides a close-up look at two of the extremely bright infrared galaxies revealed by NASA's Spitzer Space Telescope. While they are very faint (bottom) or even completely invisible (top) in the deepest-ever optical images obtained by NASA's Hubble Space Telescope, Spitzer easily picked them up because of their strong infrared emissions. Astronomers believe these galaxies are particularly "red" because they are very old and appear to go back in time to a period when the universe was only two billion years old. To download, choose your preferred resolution and file format below. "High-Resolution" files will always be the highest resolution and widest crop available, intended for print. Other resolutions are provided for convenient on-screen viewing. Screen-Resolution (450x425) : JPEG (20 KB)
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