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Aug 14, 2008: Targeting the Jet Sources - The geologically active "tiger stripe" fractures of Enceladus are revealed in unprecedented detail in three high-resolution Cassini image mosaics, acquired during the Aug. 11 flyby. [Press release here.] |
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Aug 12, 2008: Skeet Shooting Enceladus - Cassini's first-of-a-kind sharp shooting over the south polar terrain of Enceladus to image the unusual geology there was a dazzling success, capturing, at close range, several of the 'tiger stripe' fractures that cross the south pole. |
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Aug 7, 2008: Enceladus Rev 80 Flyby - Skeet Shooting Enceladus: Cassini will plunge toward Enceladus on Aug. 11, coming within a mere 50 kilometers of its equatorial region and diving through the icy spray of its towering south polar plume. The detailed schedule of events for this remarkably close encounter, which is expected to return exquisitely detailed views of the surface vents of Enceladus' famous jets, is presented in a special edition of the regular CICLOPS feature, Looking Ahead. |
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Captain's Log
March 9, 2006
Enceladus! Last November, special imaging sequences trained on Enceladus as it sat backlit by the sun revealed in striking detail the plume of material that we had flown through back in July as we buzzed the Enceladus surface.  Many distinct narrow fountains of vapor and fine water ice particles, were clearly seen jetting from the south polar surface and reaching tens of miles into space. These jets supply material to an even larger diffuse plume that extends hundreds of miles above the south pole. A spectacular sight if there ever was one!
Our detailed analyses of these images have led us to a remarkable conclusion, documented in a paper to be published in the journal SCIENCE tomorrow, that the jets are erupting from pockets of liquid water, possibly as close to the surface as ten meters ... a surprising circumstance for a body so small and cold. Other Cassini instruments have found that the fractures on the surface and the plume itself contain simple organic materials, and that there is more heat on average emerging from the south polar terrain, per square meter, than from the Earth.
Gathering all the evidence and steeling ourselves for the "shockwave spread 'round the world", we find ourselves staring at the distinct possibility  that we may have on Enceladus subterranean environments capable of supporting life. We may have just stumbled upon the Holy Grail of modern day planetary exploration. It doesn't get any more exciting than this.
A great deal more analysis and further exploration with Cassini must ensue before this implication becomes anything more than a suggestion. But at the moment, the prospects are staggering. Enceladus may have just taken center stage as the body in our solar system, outside the Earth, having the most easily accessible bodies of organic-rich water and, hence, significant biological potential.
Many years from now, it may well be that we and those who follow us will look back on these explorations of Saturn and take our discoveries on this otherwise cold little world to be the most wondrous of any we've ever made.
Future explorers of Saturn will have much to look forward to.
Carolyn Porco
Cassini Imaging Team Leader
CICLOPS/Space Science Institute
Boulder, CO
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| Captain's Log: Mission Accomplished! | | June 30, 2008 | In late 1990, a collection of hundreds of scientists and as many engineers across the US and Europe were assembled together and given the charge to undertake a far-sighted interplanetary expedition of enormous scope and reach.
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| Captain's Log: Diving Over Enceladus | | March 26, 2008 | Our run of daring tactical maneuvers over the surface of Enceladus to uncover as much as we can about this strange beast began two weeks ago, and today we learn what came of that encounter.
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| Captain's Log: Holiday Greetings 2007 | | December 24, 2007 | So another year around Saturn is coming to a close, and by anyone's measure it has been a momentous time of adventure and revelation.
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| Captain's Log: Cassini's Diamond Anniversary | | October 15, 2007 | Ten years ago today, like a great mythological bird rising in brilliant magnificence from its funeral pyre, a mighty Titan IV rocket, equipped to scale the gravity binding it and its precious cargo to Earth, leapt with a deafening roar from Cape Canaveral's Launch Pad 40 on a pillar of orange flames, veered gracefully towards the east, and quickly receded into the black of night.
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| Captain's Log: The Wetlands of Titan | | March 15, 2007 | Will the wonders in this distant corner of our solar system ever cease? In recent months, our travels have taken us to realms around Saturn never before visited by spacefaring vehicles, showing us vistas never before seen by human eyes.
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| Captain's Log: A Year of Surveillance | | December 29, 2006 | As another year in Saturn orbit, and sixteen additional revolutions around the planet, come to a close, we look back on the spoils of 2006, a Year of Surveillance, when we dove in close and enjoyed repeated looks at the bodies and phenomena we discovered during our first 1.5 years around the ringed planet.
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| Captain's Log: Total Eclipse of the Sun ... and a Pale Blue Orb | | September 19, 2006 | In its ceaseless wanderings around Saturn over the last two years, Cassini has delighted us Earthlings with ever-changing vistas of Saturn and its collection of rings and moons. Today, we are treated to a rare view of the Saturnian system like we've never seen it before.
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| Captain's Log: Sixty-Four Sights from Saturn | | June 18, 2006 | Today, former Beatle Paul McCartney turns 64, a landmark anniversary made so by his own special blend of diverse musical creativity and sunny disposition captured in the old-fashioned song `When I'm 64', recorded 40 years ago this year.
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