Detecting Metals in Invisible Galaxies

A distant quasar is used as a beacon in the Universe. Galaxies and intergalactic material that lie between the quasar and us will reveal themselves by the features seen in the spectrum. Figure adapted from John Webb.


John Webb

About the Image

Release date:15 February 2006
Related releases:eso0606
Size:2480 x 1458 px

About the Object

Name:Quasar, Spectrum
Type:• Unspecified : Galaxy : Activity : AGN : Quasar

Image Formats

Large JPEG
703.2 KB
Screensize JPEG
166.4 KB


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