Posted by Emily Lakdawalla on 2012/03/08 02:27 CST
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.
Posted by Emily Lakdawalla on 2012/01/09 11:23 CST
A recent view from Cassini of Saturn with its largest moon (Titan) and one of its small ringmoons, Prometheus.
Posted by Emily Lakdawalla on 2011/12/22 11:52 CST
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.
Posted by Emily Lakdawalla on 2011/12/21 12:10 CST
When I posted about the really cool Cassini SAR images of Enceladus a few weeks ago, I initially wrote that this was the first-ever SAR image of an icy moon other than Titan. Several people (some readers and two members of the Cassini science team!) corrected that statement: Cassini has performed SAR imaging of other icy moons (including Enceladus) before.
Posted by Emily Lakdawalla on 2011/12/01 07:22 CST
On the November 6, 2011 flyby of Enceladus -- the third such flyby in just a few weeks -- the Cassini mission elected to take a SAR swath instead of using the optical instruments for once. So here it is: the first-ever SAR swath on Enceladus. In fact, the only other places we've ever done SAR imaging are Earth, the Moon, Venus, Iapetus, and Titan.
Posted by Emily Lakdawalla on 2011/10/20 12:35 CDT
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.
Posted by Emily Lakdawalla on 2011/10/07 07:09 CDT
Today was (is) the last day of the Division of Planetary Sciences / European Planetary Science Congress meeting in Nantes, France.
Posted by Emily Lakdawalla on 2011/10/04 11:18 CDT
It's been a very full day at the DPS-EPSC 2011 joint meeting. My day was less full than it might have been, because I overslept and missed most of the morning's session. I really needed the rest though so I think it was probably for the best!
Posted by Emily Lakdawalla on 2011/10/03 11:55 CDT
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!
Posted by Emily Lakdawalla on 2011/09/28 12:28 CDT
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.
Posted by Emily Lakdawalla on 2011/09/23 01:09 CDT
About four years ago I wrote a blog entry about an ESA press release about paper published in Nature that suggested that Saturn's moons Tethys and Dione might have volcanic activity, like Enceladus. A new paper published in Icarus casts doubt on that conclusion.
Posted by Emily Lakdawalla on 2011/08/26 05:43 CDT
Yesterday Cassini passed unusually close by Hyperion, the oddly shaped moon that orbits Saturn just beyond Titan. Among the many cool images captured during this flyby were three that I used to make this neato view of Hyperion's crescent.
Posted by Emily Lakdawalla on 2011/08/24 05:13 CDT
I haven't checked in on Cassini lately. I went to the raw images page and found the frames for this very lovely, very close view of Saturn. It was taken by Cassini two days ago, as it was approaching periapsis.