The absorption lines we find in quasar redshifts that arise from intervening gas clouds show even larger redshifts than the quasar spectra, due to dust absorption.

Question

Quizplus · Accepted Answer

The absorption lines found in quasar redshifts from intervening gas clouds actually show smaller redshifts than the quasar's emission lines. This is because the intervening gas clouds are closer to us than the quasar, not because of dust absorption.

The Absorption Lines We Find in Quasar Redshifts That Arise