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            "description": "See [NASA.gov](http://www.nasa.gov/press/2015/march/nasa-research-suggests-mars-once-had-more-water-than-earth-s-arctic-ocean/)",
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                "alt_text": "NASA planetary scientists Geronimo Villanueva and Michael Mumma discuss their findings regarding the ancient ocean of Mars.Watch this video on the NASAexplorer YouTube channel.For complete transcript, click here.",
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