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Old and 'Red' Distant Galaxies
Ssc2004 10b

Credit: NASA/JPL-Caltech

Observation • June 1st, 2004 • ssc2004-10b


This 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.

About the Object

Great Observatories Origins Deep Survey

Color Mapping

Band Wavelength Telescope
Infrared Spitzer IRAC