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Fun Friday photo: Titan and Rhea

Emily Lakdawalla • October 30, 2009

Cassini recently captured a series of images documenting Rhea passing behind Titan.

What "phase angle" means

Emily Lakdawalla • October 27, 2009

As is probably obvious by now, I love playing with spacecraft image data. I am always looking for excuses to dive into space image archives to unearth images of stuff in space that haven't really been seen by very many people before.

Spinning spokes in Saturn's rings

Emily Lakdawalla • October 21, 2009

Here's a neat animation captured last month by Cassini and assembled by Mike Malaska: spokes in Saturn's B ring.

Saturn shadows shift with the seasons

Emily Lakdawalla • October 19, 2009

So many goodies on the Cassini raw images website lately! I am especially excited when Cassini takes photos through red, green, and blue filters so that it's possible to create views that look roughly like what you'd see with your own eyes.

Fun for Sunday: Titan and Tethys pas de deux

Emily Lakdawalla • October 18, 2009

Checking in on Cassini's raw images this weekend, there are several nice shots to play with, including the many frames from which I tossed together this cute animation.

Rhea, Enceladus, Mimas, and Tethys, oh my!

Emily Lakdawalla • October 15, 2009

With the last Titan flyby on October 12, Cassini came back to an orbit that's nearly in the equatorial plane, and immediately rewarded us with some fine views of several of the icy moons. Here are a bunch of images of those moons.

The Phoebe ring

Emily Lakdawalla • October 14, 2009

Last week, planetary astronomers Anne Verbiscer, Michael Skrutskie, and Doug Hamilton published a paper in Nature succinctly titled "Saturn's Largest Ring." In the paper, they announce the discovery, using the Spitzer infrared space telescope, of a gargantuan, previously unseen ring around Saturn, encompassing the orbit of Phoebe.

OMG! Aurora!

Emily Lakdawalla • October 12, 2009

Unmannedspaceflight.com member Astro0 was fiddling around with an interesting-looking sequence of Cassini images when he discovered their purpose -- they were gathered in order to see if Cassini could catch aurorae flaring into being near Saturn's north pole. Cassini sure did!

Changes in Titan's southern lakes

Emily Lakdawalla • October 06, 2009

Today's science press release out of the Division of Planetary Sciences meeting concerns changes in lakes near Titan's south pole observed during Cassini's mission. In brief, repeat Cassini RADAR observations of the same spots during different Titan flybys turned up places where there appeared to be dark lakes in earlier images and dry lakes in later images.

The "Water on the Moon" Hoopla, Part 1: There's water on the Moon!

Emily Lakdawalla • September 25, 2009

For a couple of weeks now, I've been hearing rumors about an upcoming announcement concerning Chandrayaan-1 Moon Mineralogy Mapper ("M3") discovery of "lots of" water on the Moon.

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