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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
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.

About the Object

  • R.A. Position
    R.A. PositionRight ascension – analogous to longitude – is one component of an object's position.
    03h 32m 30.0s
  • Dec. Position
    Dec. PositionDeclination – analogous to latitude – is one component of an object's position.
    -27° 48' 20.0"
  • Release Date
    June 1, 2004
  • Science Release
    Spitzer Leads NASA’s Great Observatories to Uncover Black Holes, Other Hidden Objects in the Distant Universe
  • Credit
    NASA, ESA, A. M. Koekemoer (STScI), M. Dickinson (NOAO) and The GOODS Team

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Details

Last Updated
Mar 14, 2025
Contact
Media

Claire Andreoli
NASA’s Goddard Space Flight Center
Greenbelt, Maryland
claire.andreoli@nasa.gov