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Science 30 May 2008:
Vol. 320. no. 5880, pp. 1167 - 1168
DOI: 10.1126/science.1158538
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Perspectives

ASTRONOMY:
A Blast from the Past

Andrew C. Fabian

Echoes of light, reflections from nearby gas and dust clouds, can be used to reconstruct past astronomical events.

Institute of Astronomy, Cambridge University, Madingley Road, Cambridge CB3 0HA, UK. E-mail: acf{at}ast.cam.ac.uk

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Science. ISSN 0036-8075 (print), 1095-9203 (online)