Help Shape the Future of Space Exploration

Join The Planetary Society Now  arrow.png

Join our eNewsletter for updates & action alerts

    Please leave this field empty
Blogs

Blog Archive

 

Pretty picture: Enceladus, in lovely color

Posted by Emily Lakdawalla on 2012/02/06 02:38 CST

Here's an awesome picture to start off the week. The data came from Cassini's flyby of Enceladus on January 31, 2011; it was part of Cassini's January 2012 data release.

Read More »

Watch this week's Google+ Space Hangout

Posted by Emily Lakdawalla on 2012/01/19 03:12 CST

This week's lineup is a largely astronomical crowd so most of the conversation concerned dark matter and boiling exoplanets and imaging the black hole at the center of our galaxy.

Read More »

Evaporites on Titan

Posted by Emily Lakdawalla on 2012/01/12 04:33 CST

Evaporites form on planetary surfaces when dissolved chemical solids precipitate out of saturated solution as their liquid solvent evaporates and, until recently, were known to exist only on Earth and Mars. This article from the IAG Planetary Geomorphology Working Group describes the third planetary instance of evaporite, discovered on Saturn's moon Titan.

Read More »

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

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.

Read More »

Pretty pictures from Cassini's recent Dione flyby

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.

Read More »

More radar images of icy moons from Cassini: Iapetus, Enceladus, and Rhea

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.

Read More »

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

Posted by Emily Lakdawalla on 2011/12/15 11:18 CST

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.

Read More »

Pretty picture: Mimas scuttles behind Dione

Posted by Emily Lakdawalla on 2011/12/12 06:36 CST

Images from the Cassini spacecraft's flyby of Dione.

Read More »

First-ever high-resolution Synthetic Aperture Radar image of Enceladus

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.

Read More »

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

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.

Read More »

Saturnlit moon, sunlit fountains

Posted by Emily Lakdawalla on 2011/10/07 06:00 CDT

It's been a week of very heavy science on this blog, so I thought it'd be nice to go into the weekend with a post in which a breathtaking picture speaks for itself, without needing my thousands of words.

Read More »

Brief notes from Day 2 of the DPS-EPSC meeting

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!

Read More »

Some first impressions of EPSC-DPS meeting

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!

Read More »

Pretty pictures: Dancing moons

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.

Read More »

Tethys and Dione don't seem to be active after all

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.

Read More »

Scale solar system presentation slide, a provisional version for you to review

Posted by Emily Lakdawalla on 2011/09/15 02:18 CDT

I'm preparing a talk for the Pacific Astronomy and Telescope Show here in Pasadena on Sunday afternoon at 1:45. I have spent the morning putting together a slide that I have long wanted to have for presentations.

Read More »

Titan crater and programming note

Posted by Emily Lakdawalla on 2011/09/02 11:58 CDT

The summer is winding to a close but it's not quite over for me -- by which I mean my children -- yet.

Read More »

New Horizons workshop, day 1: Chemistry & climate on Pluto & other cold places

Posted by Emily Lakdawalla on 2011/08/30 11:27 CDT

Today and tomorrow I'm attending the New Horizons Workshop on Icy Surface Processes. The first day was all about the composition of the surface and atmosphere of Pluto, Charon, Triton, and other distant places.

Read More »

Holey Hyperion!

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.

Read More »

Pretty picture: five moons for Cassini

Posted by Emily Lakdawalla on 2011/08/03 09:57 CDT

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.

Read More »

Items 61 - 80 of 154  Previous12345678Next
Facebook Twitter Email RSS AddThis

JOIN THE
PLANETARY SOCIETY

Our Curiosity Knows No Bounds!

Become a member of The Planetary Society and together we will create the future of space exploration.

Join Us

Featured Images

Soyuz TMA-16M closes in
Liftoff of Soyuz TMA-16M
One-year crew liftoff
Tethys in enhanced color: south pole and southern Ithaca Chasma
More Images

Featured Video

Spacecraft Do-Over

Watch Now

Space in Images

Pretty pictures and
awe-inspiring science.

See More

Join the New Millennium Committee

Let’s invent the future together!

Become a Member

Connect With Us

Facebook! Twitter! Google+ and more…
Continue the conversation with our online community!