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Now you don't see it; now you do - the image of a galaxy from a time when the universe was only a billion years old. The left image, from Hubble, sees nothing in the sky, but the longer wavelength infrared image from Spitzer (right) sees a bright source. The intense star formation activity in the galaxy, its distance, and the expansion of the universe combine to make it appear in the infrared.
Credit: K. Caputi
Low Resolution Image (jpg)
Credit: K. Caputi
Low Resolution Image (jpg)
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