Image: Qsoabs

Description: Spectra of QSO's (quasi-stellar objects) reveal a plethora of absorption lines, most of which actually have nothing to do with the QSO itself. Instead they are due to cosmologically distributed gas which intersects the line of sight from Earth to the QSO and imprints a distinct absorption signature onto the spectrum of the QSO.
Title: Qsoabs
Credit: http://www.eso.org/~jliske/qsoal/ http://www.eso.org/~jliske/qsoal/qsoabs.jpg
Author: Joe Liske
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