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Cassini views Saturn's rings again

Date:
July 10, 2012
Source:
NASA/Jet Propulsion Laboratory
Summary:
It's been nearly two years since NASA's Cassini spacecraft has had views like these of Saturn's glorious rings. These views are possible again because Cassini has changed the angle at which it orbits Saturn and 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.

These three Cassini images show a propeller-shaped structure created by an unseen moon in Saturn's A ring.
Credit: NASA/JPL-Caltech/SSI/Cornell

It's been nearly two years since NASA's Cassini spacecraft has had views like these of Saturn's glorious rings. These views are possible again because Cassini has changed the angle at which it orbits Saturn and 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.

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Cassini's recent return of ring images has started to pay off. A group of scientists has restarted the team's studies of propeller-shaped gaps. These gaps are cleared out by objects that are smaller than known moons but larger than typical ring particles. Cassini scientists haven't seen propellers in two years. Matt Tiscareno, a Cassini imaging team associate at Cornell University, Ithaca, N.Y., and colleagues have been following these objects for several years. Because some of the propellers are exactly where models predicted they would be, scientists believe they are seeing some old friends again.

Scientists are eagerly waiting for the other data that will come from this change in perspective. What's the secret to getting Cassini to orbit at such high angles? Cassini's lead navigator, Duane Roth, explains in a JPL blog post: http://blogs.jpl.nasa.gov/2012/07/a-different-slant/.


Story Source:

The above story is based on materials provided by NASA/Jet Propulsion Laboratory. Note: Materials may be edited for content and length.


Cite This Page:

NASA/Jet Propulsion Laboratory. "Cassini views Saturn's rings again." ScienceDaily. ScienceDaily, 10 July 2012. <www.sciencedaily.com/releases/2012/07/120710103843.htm>.
NASA/Jet Propulsion Laboratory. (2012, July 10). Cassini views Saturn's rings again. ScienceDaily. Retrieved December 22, 2014 from www.sciencedaily.com/releases/2012/07/120710103843.htm
NASA/Jet Propulsion Laboratory. "Cassini views Saturn's rings again." ScienceDaily. www.sciencedaily.com/releases/2012/07/120710103843.htm (accessed December 22, 2014).

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