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Science 15 August 2003:
Vol. 301. no. 5635, pp. 906 - 909
DOI: 10.1126/science.301.5635.906
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News Focus

SPACE EXPLORATION:
One Nuclear Leap to Mars?

Richard Stone

SEMIPALATINSK TEST SITE, KAZAKHSTAN--At a meeting in June in Moscow, Russian space scientists unveiled preliminary plans to transport people to Mars, including the likeliest propulsion systems for getting there and measures to protect astronauts from overexposure to cosmic rays and the ill effects of microgravity during a 2-year journey to the Red Planet and back.

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