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SATURN DAILY
Cassini Flies High to View Saturn's Rings Again
by Staff Writers
Boulder, CO (SPX) Jul 11, 2012


NASA's Cassini spacecraft has recently resumed the kind of orbits that allow for spectacular views of Saturn's rings. For a larger version of this image please go here.

It's been nearly two years since NASA's Cassini spacecraft has had views like those it is now enjoying of Saturn's glorious rings. These views are possible again because Cassini has changed the angle at which it orbits Saturn and now regularly passes above and below Saturn's equatorial plane. Steeply inclined orbits around the Saturn system also allow scientists to get better views of the poles and atmosphere of Saturn and its moons.

Cassini's recent return of ring images has started to pay off. A group of scientists has restarted the imaging team's studies of the famous propeller features.

These features are actually small, longitudinally limited, orbiting gaps in the rings that are cleared out by objects smaller than known moons but larger than typical ring particles.

Matt Tiscareno, a Cassini imaging team associate at Cornell University, Ithaca, N.Y., and colleagues had been following these objects for several years, but haven't seen them in the last two because Cassini's orbits were unfavorable.

Because some of the propellers have been seen again in the new images exactly where models predicted they would be, scientists believe they are seeing some old friends again.

Scientists are eagerly awaiting images of the polar regions of the planet and its moons that also will come from this change in perspective.

"We're entering a new episode in Cassini's exploratory voyage through the Saturn system," said Carolyn Porco, imaging team lead, based at the Space Science Institute, Boulder, Colo. "These new ring results are an early harbinger of great things to come. So watch this space!"

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Related Links
Cassini at JPL
Cassini images
Explore The Ring World of Saturn and her moons
Jupiter and its Moons
The million outer planets of a star called Sol
News Flash at Mercury






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SATURN DAILY
Titan's tides point to hidden ocean
Paris, France (ESA) Jul 03, 2012
Nothing like it has been seen before beyond our own planet: large tides have been found on Saturn's moon Titan that point to a liquid ocean - most likely water - swirling around below the surface. On Earth, we are familiar with the combined gravitational effects of the Moon and Sun creating the twice-daily tidal rise and fall of our oceans. Less obvious are the tides of a few tens of centimetres ... read more


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