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Bill Keel's Quasars and Active Galactic Nuclei page. |
The National Radio Astronomy Observatory's Image Gallery of Active Galactic Nuclei |
Quasars typically emit strong Lyman alpha. Blueward of the emission line is a forest of Lyman alpha absorption lines, produced by the cosmic web of hydrogen gas along the line of sight between us and the quasar.
Quasar animation |
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Updated 2012 Jan 16