A Close-Up Look of Two of the Extremely Red Galaxies Revealed By Spitzer

A close-up look of two of the extremely red galaxies revealed by Spitzer. While they are very faint (the bottom one) or even completely invisible (the top one) in the deepest-ever optical images obtained by Hubble, Spitzer easily picked them up because of their strong infrared emissions. Astronomers believe these galaxies are so red because they are very old, possibly as old as the Universe was - about 2 billion years - at the time when these galaxies emitted the lights that Spitzer received today.

Credit:

NASA, ESA, A. M. Koekemoer (STScI), M. Dickinson (NOAO) and The GOODS Team

About the Image

NASA press release
NASA caption
Id:opo0419j
Type:Artwork
Release date:1 June 2004, 17:00
Size:885 x 747 px

About the Object

Name:Red Galaxies
Type:• Early Universe : Galaxy
• Early Universe : Cosmology : Morphology : Deep Field
• X - Galaxies Images/Videos


Image Formats

Large JPEG
36.0 KB
Screensize JPEG
39.4 KB

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