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Science 9 November 2007:
Vol. 318. no. 5852, pp. 896 - 897
DOI: 10.1126/science.318.5852.896
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News of the Week

ASTROPHYSICS:
Universe's Highest-Energy Particles Traced Back to Other Galaxies

Adrian Cho

Ultrahigh-energy cosmic rays appear to come from the neighborhoods of certain nearby churning galaxies, physicists working with the Pierre Auger Observatory report on page 938 of this week's issue of Science. The finding marks a first big step toward explaining the mysterious particles, others say.

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