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Science 10 February 2006:
Vol. 311. no. 5762, pp. 787 - 788
DOI: 10.1126/science.1122395
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Perspectives

ASTRONOMY:
Is the Mystery of Cosmic Magnetic Fields Solved?

Ruth Durrer

The origin of the magnetic fields seen throughout the cosmos has been puzzling. New calculations show that the density fluctuations in the early universe can produce fields of the right amplitude.

The author is in the Department of Theoretical Physics, University of Geneva, Geneva CH-1211, Switzerland. E-mail: ruth.durrer{at}physics.unige.ch

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