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Science 16 October 1998:
Vol. 282. no. 5388, pp. 423 - 424
DOI: 10.1126/science.282.5388.423
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Perspectives

ASTROPHYSICS:
Making Sense of Active Galaxies

Daniel W. Weedman

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.

The author is in the Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, PA 16802 USA. E-mail: weedman{at}astro.psu.edu

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