Making Sense of Active Galaxies

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Science  16 Oct 1998:
Vol. 282, Issue 5388, pp. 423-424
DOI: 10.1126/science.282.5388.423

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Active galaxies are unusual in their structure and brightness. The general consensus is that active galaxies are powered by matter falling into black holes, but questions remain about the precise mechanism of the infall and how the very bright luminosity is produced. In his Perspective, Weedman reports on a recent symposium on active galaxies held at the Byurakan Astrophysical Observatory, Armenia.