Latest Moons of Saturn Stories

Cassini Plasma Spectrometer Turned Off, Engineers Investigating
2012-06-08 03:17:40

The Cassini plasma spectrometer instrument (CAPS) aboard NASA's Cassini spacecraft was turned off between Friday, June 1 and Saturday, June 2, when a circuit breaker tripped off after the instrument experienced some unexpected voltage shifts. Engineers are currently investigating this issue, which they believe is due to short circuits in the instrument. In June 2011, the instrument was turned off because of similar problems, but was switched on again in March 2012 once investigators...

Enceladus Plume Highlights 'Dusty Plasma'
2012-06-04 07:20:05

Recent findings from NASA's Cassini mission reveal that Saturn's geyser moon Enceladus provides a special laboratory for watching unusual behavior of plasma, or hot ionized gas. In these recent findings, some Cassini scientists think they have observed "dusty plasma," a condition theorized but not previously observed on site, near Enceladus. Data from Cassini's fields and particles instruments also show that the usual "heavy" and "light" species of charged particles in normal plasma are...

Cassini Spots Tiny Moon Methone
2012-05-22 04:03:14

NASA's Cassini spacecraft made its closest approach to Saturn's tiny moon Methone as part of a trajectory that will take it on a close flyby of another of Saturn's moons, Titan. The Titan flyby will put the spacecraft in an orbit around Saturn that is inclined, or tilted, relative to the plane of the planet's equator. The flyby of Methone took place on May 20 at a distance of about 1,200 miles (1,900 kilometers). It was Cassini's closest flyby of the 2-mile-wide (3-kilometer-wide) moon. The...

Cassini, Saturn Moon Photographer
2012-05-04 03:18:29

Shortly after passing Enceladus, Cassini had a non-targeted encounter of Dione. At closest approach, the spacecraft flew within about 5,000 miles (8,000 kilometers) of the moon. Cassini's cameras captured several mosaics during this encounter, including one taken around the time of closest approach that covered a fracture named Latium Chasma at resolutions of about 175 feet (53 meters) per pixel. Other mosaics cover much of Dione's northern hemisphere that faces away from Saturn in its orbit,...

Cassini To Probe Enceladus Gravity, Take Pictures
2012-05-02 04:03:26

NASA's Cassini spacecraft will be flying within about 46 miles (74 kilometers) of Saturn's moon Enceladus on Wednesday, May 2, aiming primarily to learn more about the moon's internal structure. The flyby is the third part of a trilogy of flybys -- the other two took place on April 28, 2010, and Nov. 30, 2010 -- for Cassini's radio science experiment. The radio science team is particularly interested in learning how mass is distributed under Enceladus' south polar region, which features jets...

Image 1 - Saturn Moon Has Planet-Like Properties, NASA Finds
2012-04-27 08:07:32

Phoebe, one of Saturn´s 60+ moons, has been found to have planet-like properties, NASA scientists discovered while analyzing swarms of data collected and transmitted by the Cassini orbiter. New analysis of images of Phoebe lead scientists to theorize how the 140-mile-in-diameter rock started life. They suggest that it began its life as a planetoid in the Kuiper belt, a much larger version of the asteroid belt that sits on the outer edge of our planetary system. The scientists...

Image 1 - Cassini Eyes Blazing Trails In Saturn’s F-ring
2012-04-25 03:30:19

Brett Smith for Redorbit.com [ Watch the Video ] Scientists studying images from NASA´s Cassini spacecraft have found evidence of massive snowballs dragging glittering trails from one of Saturn´s rings. Saturn´s F ring has often been thought to be the most affected of the giant plant´s rings, often changing its look over the course of hours. The orbiting debris field measures a few hundred miles wide and is shepherded around the planet by two moons,...

Image 1 - Lake On Titan Resembles One In Africa
2012-04-21 05:09:53

A new study based on data from the Cassini spacecraft suggests that a lake on one of Saturn's moons behaves similarly to the Etosha salt pan on Earth. A group led by Thomas Cornet of the Université de Nantes, France, a Cassini associate, found characteristics of Ontario Lake on Titan are similar to Etosha Pan in Namibia, Africa because it drains and refills from below. Etosha Pan is a lake bed that fills with a shallow layer of water from groundwater levels that rise during...

Latest Moons of Saturn Reference Libraries

2004-10-19 04:45:44

Lagrangian Point -- In Lagrangian mechanics, a Lagrangian point (or L-point) is one of five positions in space where the gravitational fields of two bodies of substantial but differing mass combine to form a point at which a third body of negligible mass would be stationary relative to the two bodies. Bodies at the L-point will not move relative to the parent bodies if they are not perturbed by other gravitational forces. They are sometimes also referred to as libration points. The...

2004-10-19 04:45:41

Saturn's moon Phoebe -- Phoebe is the outermost of Saturn's known moons. Phoebe is almost 4 times more distant from Saturn than its nearest neighbor (Iapetus). It was discovered by William Henry Pickering in 1898. Most of Saturn's moons have very bright surfaces, but Phoebe's albedo is very low (.06), as dark as lampblack. All of Saturn's moons except for Phoebe and Iapetus orbit very nearly in the plane of Saturn's equator. Phoebe's orbit is retrograde, inclined almost 175, and is...

2004-10-19 04:45:41

Saturn's moon Titan -- Titan is the planet Saturn's largest moon. It is larger than either of the planets Mercury or Pluto and is the second-largest moon in the solar system after Ganymede (it was originally thought to be slightly larger than Ganymede, but recent observations have shown that its thick atmosphere caused overestimation of its diameter). Titan was discovered on March 25, 1655 by the Dutch astronomer Christian Huygens, making it one of the first non-terrestrial moons to be...

2004-10-19 04:45:41

Saturn's moon Rhea -- Rhea is the second largest moon of Saturn. It was discovered in 1672 by Giovanni Cassini. Rhea is an icy body with a density of about 1.24 gm/cm3. This low density indicates that it has a rocky core taking up less than one-third of the moon's mass with the rest composed of water-ice. Rhea's features resemble those of Dione, with dissimilar leading and trailing hemispheres, suggesting similar composition and histories. The temperature on Rhea is -174°C in direct...

2004-10-19 04:45:41

Saturn's moon Helene -- Helene is a moon of Saturn, discovered by Laques and Lecacheux in 1980 from ground-based observations. It is co-oribtal with Dione and located in its leading Lagrangian point (L4) and hence is sometimes referred to as "Dione B". ----- Orbital radius: 377,400 km Diameter: 33 km (36 x 32 x 30) Mass: Unknown Orbital period: 2.7369 days Orbital inclination: 0.2 ----- NASA Learn more on this topic from eLibrary here:

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