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Science 2 January 2004:
Vol. 303. no. 5654, p. 27
DOI: 10.1126/science.303.5654.27a
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News of the Week

ASTROPHYSICS:
Are Most Life-Friendly Stars Older Than the Sun?

Robert Irion

Our solar system has lived in a hospitable part of the Milky Way for nearly 5 billion years. But most of the galaxy's other inhabited systems--if they exist--would have had even longer to nurture life, according to a study on page 59.

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