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halfway through its four years Saturn

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tour Cassini's travel log is brimming

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with news one amazing discovery after

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another like postcards from an excited

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tourist information streams home I think

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it was beyond what we could have

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imagined data set being returned from

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Cassini is extraordinarily rich

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scientists will be studying it and

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learning about the Saturn system for

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decades after the mission is over a

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high-priority destination Saturn's

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largest moon Titan NASA's Voyager

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spotted an intriguing orange ball 25

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years ago the scene II went back for a

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closer look on January 14 2005 Cassini

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released the Huygens probe with cameras

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rolling and a microphone recording it

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revealed a place that is strikingly

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earth life

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Cassini has also flown by Titan more

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than a dozen times they are in French

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Titan has a thick atmosphere and we use

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the radar to be able to see the detailed

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geology we can see little swirls and

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inlets and outlets you know things like

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maybe think of his Bay's we know that

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the materials on Titan are distinctly

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different from what we find my word you

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don't find the josé materials and yet

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you find the same processor story that's

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really exciting while scientists

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expected lots of discoveries at the big

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moon Titan one of the biggest surprises

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has been from the small moon Enceladus

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here it is a tiny tiny tiny little moon

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it has geysers shooting out of the South

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Pole if you catch it in the right light

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Enceladus will show you sort of these

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jets and they're huge they extend almost

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the size of the moon itself just amazing

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amazing they call it cold faithful

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because of the similarities to the

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hydrothermal system powering Old

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Faithful in Yellowstone all the evidence

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points to possible water near the

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surface it's one of the numerous

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discoveries that will ensure the CD spot

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in history we will be learning about the

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Saturn system for decades after the

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mission

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I can't I can't even begin to estimate

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how many young scientists will do a PhD

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dissertation on Cassini data the number

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is going to be staggering Cassini's

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passport is only half filled its

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itinerary over the next two years

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includes dozens of flybys of Titan

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solidus Saturn's other moons and its

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grains we can expect more postcards from