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A Salty Sea on Mars

Air Date: 03/29/2004
Run Time: 0:29:17

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Guests:

• Ken Herkenhoff,

Topics:

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Mars Exploration Rover Opportunity has returned conclusive evidence that water once flowed over the Meridiani Planum. The probe's Microscopic Imager had a big part in this discovery. We talk with the lead scientist for the MI Ken Herkenhoff. Emily Lakdawalla wonders if night ever comes to people living in a double star system, and Bruce Betts gets his whole family in on the fun during this week's What's Up!