Cassini Heading to Titan after Tagging Enceladus

May 20, 2010
This raw, unprocessed image of Titan behind Saturn's rings was taken on May 18, 2010, by the Cassini spacecraft. The dark curve of Enceladus is visible at the bottom of the image. Credit: NASA/JPL/SSI

(PhysOrg.com) -- NASA's Cassini spacecraft is on its way to a flyby of Saturn's largest moon, Titan, after capturing some stunning images of Enceladus. One view shows the hazy outline of Titan behind Saturn's rings, with the dark curve of Enceladus at the bottom.

In other images, put its craggy face forward, exhibiting some of the fractures and cratering that have made the Saturnian moon a favorite of both planetary scientists and outer-planet mission groupies. A view of Enceladus' terminator was taken by NASA's on May 18 from approximately 75,000 kilometers (46,500 miles) away.

Cassini sent back numerous images May 18, 2010, as it finished the first leg of its planned double flyby. Cassini passed within about 435 kilometers (270 miles) of the Enceladus surface.

Cassini is heading toward Titan for a flyby that occurs in the late evening May 19 Pacific time, which is in the early hours of May 20 UTC. Because of a fortuitous cosmic alignment, Cassini can catch glimpses of these two contrasting worlds within less than 48 hours, with no maneuver in between.

The main scientific goal at Enceladus was to watch the sun play peek-a-boo behind the water-rich plume emanating from the moon's south polar region. Scientists using the ultraviolet imaging spectrograph will be able to use the flickering light to measure whether there is in the plume. Ammonia has already been detected in the plume, and scientists know heat can decompose ammonia into nitrogen molecules. Determining the amount of molecular nitrogen in the plume will give scientists clues about thermal processing in the moon's interior.

This raw, unprocessed image of Enceladus was taken on May 18, 2010, by the Cassini spacecraft, which was approximately 75,000 kilometers (46,500 miles) away at the time. Credit: NASA/JPL/SSI

The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency.

More raw images from the Enceladus flyby, dubbed "E10," are available at: saturn.jpl.nasa.gov/photos/raw/

Explore further: Image: NASA's SDO observes a lunar transit

add to favorites email to friend print save as pdf

Related Stories

Cassini Double Play: Enceladus and Titan

May 18, 2010

(PhysOrg.com) -- About a month and a half after its last double flyby, NASA's Cassini spacecraft will be turning another double play this week, visiting the geyser moon Enceladus and the hazy moon Titan. The ...

Cassini Sends Back Images of Enceladus as Winter Nears

Nov 23, 2009

(PhysOrg.com) -- NASA's Cassini spacecraft has sailed seamlessly through the Nov. 21 flyby of Saturn's moon Enceladus and started transmitting uncalibrated temperature data and images of the rippling terrain. ...

Cassini Returning Enceladus Gravity Data

May 03, 2010

(PhysOrg.com) -- NASA's Cassini spacecraft successfully completed its 26-hour gravity observation at Saturn's moon Enceladus this week, sending back data scientists will use to understand the moon's interior ...

Recommended for you

Image: NASA's SDO observes a lunar transit

21 hours ago

On July 26, 2014, from 10:57 a.m. to 11:42 a.m. EDT, the moon crossed between NASA's Solar Dynamics Observatory and the sun, a phenomenon called a lunar transit.

User comments : 0