It is the second time in two years that NASA has postponed a Mars mission. Last year, it delayed a planned 2011 launch of a $485 million Mars atmospheric probe by two years because of an unspecified conflict of interest in the selection process.
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AP Science Writer Alicia Chang in Los Angeles contributed to this report.
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On the Net:
Mars Science Laboratory: http://mars.jpl.nasa.gov/msl/
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