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Prometheus, Pandora, and the braided F ring in motion

Emily Lakdawalla • March 23, 2015

Cassini recently took a long, high-resolution movie of the F ring, catching a view of its ringlets, clumps, and streamers, and two potato-shaped moons, Prometheus and Pandora.

A Sky Full of Stars

Bill Dunford • March 09, 2015

In pictures of the planets, the stars aren't usually visible. But when they do appear, they're spectacular.

Cassini begins a year of icy moon encounters with a flyby of Rhea

Emily Lakdawalla • February 12, 2015

At last! Cassini is orbiting in Saturn's ring plane again. I do enjoy the dramatic photographs of Saturn's open ring system that Cassini can get from an inclined orbit, and we won't be getting those again for another year. But with an orbit close to the ring plane, Cassini can repeatedly encounter Saturn's icy moons, and icy moon flybys are my favorite thing about the Cassini mission.

FOIA Request Sheds Light on NASA Mission Extension Process

Jason Davis • February 06, 2015

A FOIA request offers insight into NASA's planetary science extended mission review process, which seems, at best, confusing, and at worst—with adjectival ratings like “Very Good/Good”—arbitrary.

Ceres Coming Into View

Paul Schenk • February 03, 2015

Dawn is on approach to Ceres, the largest of the asteroids, and is starting to resolve features.

Flawed Beauties

Bill Dunford • February 02, 2015

More examples of imperfect--but tantalizing--images from deep space.

Fountains of Water Vapor and Ice

Deepak Dhingra • January 22, 2015

Deepak Dhingra shares some of the latest research on Enceladus' geysers presented at the American Geophysical Union (AGU) Fall Meeting in San Francisco last month.

Riding With Cassini Through 2014

Bill Dunford • December 31, 2014

Video: see some of the sights Cassini saw this year.

Planetary exploration in 2015: The Year of the Dwarf Planet

Emily Lakdawalla • December 31, 2014

Looking ahead to what we can expect from Earth's exploration of the rest of the solar system in 2015, there's an obvious theme: Dwarf planets.

A (Difficult) Day in the Solar System

Bill Dunford • October 30, 2014

After a bad day on the launch pad, some perspective.

Cassini's awesomeness fully funded through mission's dramatic end in 2017

Emily Lakdawalla • September 03, 2014

Last year, rumors swirled that NASA may be so pinched for dollars that the agency might end the Cassini mission early. Today, Cassini received the welcome news that it has formally been funded through the planned end of its extended-extended mission in 2017. A huge congratulations to the Cassini mission!

Curiosity Rover Science Plan Slammed by NASA Review Panel

Casey Dreier • September 03, 2014

Senior review recommends continuing all major planetary exploration missions, but not without some changes.

On the masses and motions of mini-moons: Pandora's not a "shepherd," but Prometheus still is

Emily Lakdawalla • July 04, 2014

As Cassini celebrates 10 years at Saturn, we're beginning to see its long-term observations of Saturnian moons bear fruit. A surprising new result: While Prometheus exerts control over the F ring and Atlas, Pandora -- long thought to be a shepherd of the F ring -- does not.

A close look at Saturn's closest moons

Emily Lakdawalla • June 26, 2014

A new composite image of the eight named moons that orbit closest to Saturn, and a list of all the best Cassini observations of these moons.

Of Rings and Resolution

Bill Dunford • June 23, 2014

Seeing Saturn before and after Cassini.

Another Day in the Solar System

Bill Dunford • May 12, 2014

One day, five worlds.

Another Pale Blue Dot — Uranus Spied By Cassini

Val Klavans and Ian Regan • April 30, 2014

The Cassini mission has already returned an array of images of other solar system members from Saturn orbit: Earth (and the Moon), Venus, Mars, and Jupiter. It’s time to add another world to that list!

Intro Astronomy Class 9: Titan, Uranus and Neptune Systems

Bruce Betts • April 11, 2014

Examine Saturn's moon Titan and explore the Uranian and Neptunian systems in this video of class 9 of Bruce Betts' Introduction to Planetary Science and Astronomy class.

Intro Astronomy 2014. Class 8: Icy Galilean Satellites, Saturn System

Bruce Betts • April 11, 2014

Explore the icy moons of the Jupiter System and tour the Saturnian system in this video of class 8 of Bruce Betts' Introduction to Planetary Science and Astronomy class.

Help name the last phase of the Cassini mission!

Emily Lakdawalla • April 10, 2014

The scientists on the Cassini team are incredibly excited about the final, "proximal orbit" phase of the mission. But they want a punchier name for it, and they're asking the public for help.

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