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Science 26 September 2003:
Vol. 301. no. 5641, p. 1834
DOI: 10.1126/science.301.5641.1834
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News Focus

PLANETARY SCIENCE:
A-Roving We Will Go, Slowly

Richard A. Kerr

When the Opportunity and Spirit landers arrive at Mars in January, planetary scientists will begin a race against time to unravel geologic mysteries that bear on whether Mars could once have harbored life (see main text).

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