Chris Voorhees, Joy Crisp, Matt Golombek, Mark Lemmon

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Photo - <p>From left, Mechanical systems engineer Chris Voorhees, Mars Rover mission scientist Dr. Joy Crisp, Mars Rover science team member Dr. Matt Golombek, and Mars Rover science team member Dr. Mark Lemmon attend a news conference at Jet Propulsion Laboratory in Pasadena, Calif., Saturday, Jan. 10, 2004. (AP Photo/Reed Saxon)</p>

From left, Mechanical systems engineer Chris Voorhees, Mars Rover mission scientist Dr. Joy Crisp, Mars Rover science team member Dr. Matt Golombek, and Mars Rover science team member Dr. Mark Lemmon attend a news conference at Jet Propulsion Laboratory in Pasadena, Calif., Saturday, Jan. 10, 2004. (AP Photo/Reed Saxon)

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From left, Mechanical systems engineer Chris Voorhees, Mars Rover mission scientist Dr. Joy Crisp, Mars Rover science team member Dr. Matt Golombek, and Mars Rover science team member Dr. Mark Lemmon attend a news conference at Jet Propulsion Laboratory in Pasadena, Calif., Saturday, Jan. 10, 2004. (AP Photo/Reed Saxon)

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