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Pretty picture: Janus and Saturn

Emily Lakdawalla • April 04, 2012

In the last few days as it's rounded periapsis in its current orbit of Saturn, Cassini has taken a lot of great photos of Saturn's moons. One series of photos was taken from pretty close to Janus, a moon about a third the diameter of Enceladus that orbits between the F and G rings. And among those, several were taken with the moon sitting in front of Saturn.

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 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.

Pretty picture: Mimas scuttles behind Dione

Emily Lakdawalla • December 12, 2011

Images from the Cassini spacecraft's flyby of Dione.

Scale solar system presentation slide, version 2

Emily Lakdawalla • October 31, 2011

Last month I posted a preliminary version of a slide I was working on for use in my public presentations, a slide that contains everything in the solar system bigger than 400 kilometers across, and invited comment. I've listened to all of your comments and corrections and come up with a second version.

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.

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: Earth and Moon from JunoCam

Emily Lakdawalla • August 30, 2011

It's always awe-inspiring to see our great world as just a tiny spot within vast space. The latest spacecraft to get such a view of Earth and the Moon is the Jupiter-bound Juno.

Lots of great stuff in the latest Cassini data release

Emily Lakdawalla • April 13, 2011

I've got some lovely pictures from Saturn to show you! Every three months, the Cassini mission dumps gigabytes worth of precious Saturn data into the Planetary Data System, and the latest gift came on April 1. This particular pile of data, which was taken between April 1 and June 30, 2010, contains a lot of really terrific moon observations.

Io and Jupiter from Voyager 1

Emily Lakdawalla • January 31, 2011

Here's an image I've been meaning to post for months, a new mosaic from Voyager 1 by Ted Stryk of Io crossing Jupiter's terminator as it neared closest approach.

Two fine color Cassini animations: Prometheus rotating, Tethys and Dione dancing

Emily Lakdawalla • January 20, 2011

Daniel Macháček has reached into the dark side of Prometheus and pulled out an incredible amount of detail where the potato-shaped moon is illuminated by Saturnshine. He produced an animation that morphs among the three sets of four-filter color images that Cassini snapped during the flyby.

Goodies from the January 11 Rhea flyby

Emily Lakdawalla • January 12, 2011

Cassini got some incredibly tricky shots during its January 11 Rhea flyby!

Solar eclipses from space: Hinode and SDO

Emily Lakdawalla • January 06, 2011

Two spacecraft that keep their ever-watchful eyes on the Sun -- NASA's Solar Dynamics Observatory (SDO) and JAXA's Hinode -- were doing their thing, when something large wandered past: the Moon.

Bye bye, Kodachrome, but "Kodak moments" will live on in space

Emily Lakdawalla • December 31, 2010

This week is the end for Kodachrome film. It's a casualty of the digital revolution.

Mimas wanders in to view

Emily Lakdawalla • December 21, 2010

Cassini's busy downlinking photos from yesterday's close pass by Enceladus, including some neat shots of Dione and this one where Mimas skipped briefly in to the field of view.

Phobos Photobomb

Emily Lakdawalla • December 15, 2010

Don't blink when you play the video below -- it's only 15 seconds long, but it's so cool.

A few Mars Express Phobos goodies

Emily Lakdawalla • November 26, 2010

To celebrate Mars Express' recent mission extension to 2014, here are some cool pictures that it took of Mars' inner and larger moon Phobos.

Asteroids and comets to scale, including Hartley 2

Emily Lakdawalla • November 18, 2010

Just in time for today's Deep Impact press briefing, which you can watch on NASA TV in a few minutes: I've updated my montage of all the asteroids and comets that have been visited and photographed to include Hartley 2.

Pretty picture: Three moons of Saturn

Emily Lakdawalla • October 29, 2010

The Cassini Raw Images Website always offers rewards to the browser. This evening I found the raw images necessary to create this color composite, showing the hazy orange moon Titan, the mid-sized icy moon Dione, and the tiny rock Prometheus all at the same time.

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astronaut on Phobos
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