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One for the history books: Stunning Saturn mosaic captured last week by Cassini

Emily Lakdawalla • October 16, 2013

I try to be measured in my praise for spacecraft images. Not every photo can be the greatest space image ever. But this enormous mosaic showing the flattened globe of Saturn floating within the complete disk of its rings must surely be counted among the great images of the Cassini mission.

Pretty picture: Looking backward

Emily Lakdawalla • July 23, 2013

Here it is: the view from Saturn of our Earthly home, one and a half billion kilometers away. We see Earth and the Moon through a thin veil of faintly blue ice crystals, the outskirts of Saturn's E ring. Earth is just a bright dot -- a bit brighter than the other stars in the image, but no brighter than any planet (like Saturn!) in our own sky.

Return of the Pale Blue Dot

Mat Kaplan • July 18, 2013

You can be part of a planetwide group photo as Cassini and MESSENGER turn their cameras Earthward on July 19.

Mimas and Pandora dance

Emily Lakdawalla • May 15, 2013

I've been out of town for a couple of days and am overwhelmed with work and an overflowing email box. So what do I do about that? I ignore what I'm supposed to be doing and play with Cassini raw image data, of course. Here is a "mutual event" of Mimas (the bigger moon) and Pandora (the outer shepherd of the F ring).

In a New Light

Bill Dunford • April 15, 2013

Cassini's unique views of Jupiter and Saturn.

LPSC 2013: License to Chill (or, the solar system's icy moons)

Emily Lakdawalla • March 27, 2013

Reports from the March 19 session at the Lunar and Planetary Science Conference covering eight icy moons in the outer solar system: Ganymede, Europa, Dione, Rhea, Mimas, Tethys, Enceladus, and Miranda.

Arc of Ice and Light

Bill Dunford • February 18, 2013

When the sunlight catches it just right, Saturn's F Ring is something to see.

Enceladus: A problem of contrast

Emily Lakdawalla • January 30, 2013

Time for my quarterly foray into the Cassini archival science data! The very first image I downloaded from the January 1, 2013 data release presented an interesting challenge to my image processing skill. I'll show you the pretty picture of Enceladus and then explain how I processed it.

Happy Cassini PDS Release Day!

Emily Lakdawalla • October 08, 2012

It's a quarterly feast day for me: the day that the Cassini mission delivers three months' worth of data to NASA's Planetary Data System. Here's a few images processed from the October 1, 2012 data release.

Saturn's still there

Emily Lakdawalla • August 22, 2012

A pretty picture of Cassini's current view of Saturn.

Video: Saturn makes its own drama (with a little help)

Emily Lakdawalla • May 22, 2012

The apparently simple device of running Cassini images together like a flipbook makes for a dramatic movie, especially with the help of well-timed musical cues.

Pretty picture: A study in ringlight

Emily Lakdawalla • March 08, 2012

Clearly, this is Saturn, and its rings, and if you look closer you can see a tiny circle, on top of the rings, which is Mimas, and two stars in the background. It should look weird to you that while the rings are bright, Mimas is a black dot. What is happening here? Nearly everything in this picture is lit by light that has not arrived directly from the Sun.

Checking up on Jupiter and Saturn

Emily Lakdawalla • February 10, 2012

It's amateur astronomers, not professionals, who are shouldering the burden of constant monitoring of the weather on Jupiter and Saturn. What's going on these days in the outer solar system?

Pretty picture: Saturn, a big moon, and a teeny one

Emily Lakdawalla • January 09, 2012

A recent view from Cassini of Saturn with its largest moon (Titan) and one of its small ringmoons, Prometheus.

Pretty pictures from Cassini's recent Dione flyby

Emily Lakdawalla • December 22, 2011

Cassini flew close by Dione on December 12 and, as usual, the close pass provided opportunities for lots of dramatic photos, not just of Dione, but of other moons wandering by in the background.

What do we know about planetary rings? Quite a lot, actually!

Emily Lakdawalla • December 15, 2011

A summary of a new article by Matt Tiscareno about planetary ring systems that reviews the known ring systems of the four giant planets and the prospects for ring systems yet to be discovered.

Pretty pictures & movies: Eye candy from two recent Cassini Enceladus flybys

Emily Lakdawalla • October 20, 2011

Cassini has completed two very close flybys of Enceladus in less than three weeks, one of them just this morning, and the images from that encounter have already arrived on Earth.

Some first impressions of EPSC-DPS meeting

Emily Lakdawalla • October 03, 2011

Today they turned on the scientific fire hose at the Division of Planetary Sciences / European Planetary Science Congress meeting happening here in Nantes, France. My brain already feels full and I still have four more days!

Pretty pictures: Dancing moons

Emily Lakdawalla • September 28, 2011

Since Cassini currently orbits Saturn within the plane of Saturn's rings, it has lots of chances to catch two or more moons in the same photo. One such "mutual event" happened on September 17, featuring four moons: Titan, Dione, Pan, and Pandora.

Pretty picture: five moons for Cassini

Emily Lakdawalla • August 03, 2011

Explaining how to combine the red, green and blue images from a recent Cassini image session containing five of Saturn's moons: Janus, Pandora, Enceladus, Mimas and Rhea.

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