Saturn's geyser moon Enceladus shows off for Cassini

October 4, 2011

Saturn's Geyser Moon Enceladus Shows off for NASA's Cassini

Enlarge

Cassini sees jets of water vapor and ice from Enceladus. Image credit: NASA/JPL-Caltech/Space Science Institute

(PhysOrg.com) -- NASA's Cassini spacecraft successfully completed its Oct. 1 flyby of Saturn's moon Enceladus and its jets of water vapor and ice. At its closest approach, the spacecraft flew approximately 62 miles (100 kilometers) above the moon's surface. The close approach was designed to give some of Cassini's instruments, including the ion and neutral mass spectrometer, the chance to "taste" the jets themselves.

At a higher vantage point during the encounter, Cassini's high-resolution camera captured pictures of the jets emanating from the moon's south polar region. The latest raw images of Enceladus are online.

The images of the surface include previously seen leading-hemisphere terrain. However, during this encounter, multi-spectral imaging of these terrains extended farther into the ultraviolet region of the electromagnetic spectrum than had previously been achieved at this resolution. By looking at the surface at , scientists can better detect the difference between surface materials and shadows than they can at , where icy materials are highly reflective and shadows are washed out. With both ultraviolet and visible images of the same terrain available to them, scientists will better understand how the surface coverage of icy particles coming from the vents and plumes changes with terrain type and age.

Cassini's next pass of this fascinating moon will be Oct. 19, when the spacecraft flies by at an altitude of approximately 765 miles (1231 kilometers).

The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington. The and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the in Boulder, Colo. The Ion and Neutral Mass Spectrometer science team is based at the Southwest Research Institute, San Antonio, Texas.

Provided by JPL/NASA search and more info website

Filter


Move the slider to adjust rank threshold, so that you can hide some of the comments.


Display comments: newest first

NickFun
Oct 05, 2011

Rank: not rated yet
Could anyone explain how the water on Enceladus is constantly replenished as it has supposedly been spewing water for many millions of years. A moon the size of Arizona would have spent its supply relatively quickly without replenishement!
Rank 5 /5 (1 vote)
Relevant PhysicsForums posts
  • Distance of planets from stars and revolution
    created2 hours ago
  • revamping general concept and cosmological principle
    createdMay 25, 2012
  • Transiting Exoplanet Light Curve
    createdMay 25, 2012
  • Math behind Theoretical Physics
    createdMay 24, 2012
  • Do we know whats at the center of galaxies yet?
    createdMay 23, 2012
  • Structure of the Milky Way?
    createdMay 20, 2012
  • More from Physics Forums - General Astronomy

More news stories

Land and sea species differ in climate change response: study

(Phys.org) -- Marine and terrestrial species will likely differ in their responses to climate warming, new research by Simon Fraser University and Australia’s University of Tasmania has found.

Space & Earth / Environment

created 55 minutes ago | popularity not rated yet | comments 1 | with audio podcast

Yale study concludes public apathy over climate change unrelated to science literacy

Are members of the public divided about climate change because they don't understand the science behind it? If Americans knew more basic science and were more proficient in technical reasoning, would public consensus match ...

Space & Earth / Environment

created 2 hours ago | popularity 4 / 5 (1) | comments 10 | with audio podcast

10 million years needed to recover from mass extinction

It took some 10 million years for Earth to recover from the greatest mass extinction of all time, latest research has revealed.

Space & Earth / Earth Sciences

created 2 hours ago | popularity not rated yet | comments 1 | with audio podcast

Sophisticated simulations predict future warming

The chances of our planet being hit by a global warming of 3 degrees Celsius by 2050 is as likely as it being hit by an increase of 1.4 degrees, new research shows. Presented in the journal Nature Geoscience, the British study ...

Space & Earth / Earth Sciences

created May 22, 2012 | popularity 4.4 / 5 (9) | comments 51

Aliens don't want to eat us, says former SETI director

Alien life probably isn’t interested in having us for dinner, enslaving us or laying eggs in our bellies, according to a recent statement by former SETI director Jill Tarter.

Space & Earth / Space Exploration

created May 25, 2012 | popularity 4.4 / 5 (14) | comments 39


Almost half of new vets seek disability

(AP) -- America's newest veterans are filing for disability benefits at a historic rate, claiming to be the most medically and mentally troubled generation of former troops the nation has ever seen.

'Unzipped' carbon nanotubes could help energize fuel cells, batteries

Multi-walled carbon nanotubes riddled with defects and impurities on the outside could replace some of the expensive platinum catalysts used in fuel cells and metal-air batteries, according to scientists at ...

T cells 'hunt' parasites like animal predators seek prey, study shows

By pairing an intimate knowledge of immune-system function with a deep understanding of statistical physics, a cross-disciplinary team at the University of Pennsylvania has arrived at a surprising finding: T cells use a movement ...

Computer model used to pinpoint prime materials for efficient carbon capture

When power plants begin capturing their carbon emissions to reduce greenhouse gases – and to most in the electric power industry, it's a question of when, not if – it will be an expensive undertaking.

Change in developmental timing was crucial in the evolutionary shift from dinosaurs to birds: study

At first glance, it's hard to see how a common house sparrow and a Tyrannosaurus Rex might have anything in common. After all, one is a bird that weighs less than an ounce, and the other is a dinosaur that ...

Nvidia trumpets Tegra 3 phone design wins for 2012

(Phys.org) -- Nvidia’s competitive war paint has a name, Tegra 3. On the heels of Nvidia announcements about lowering costs of its Tegra 3 processors and Nvidia-enabled tablets running Android Ice Cream ...