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

 

Intro Astronomy 2014. Class 8: Icy Galilean Satellites, Saturn System

Posted by Bruce Betts on 2014/04/11 02:28 CDT

Explore the icy moons of the Jupiter System and tour the Saturnian system in this video of class 8 of Bruce Betts' Introduction to Planetary Science and Astronomy class.

Read More »

Intro Astronomy Class 7: Near Earth Asteroids and the Jupiter System

Posted by Bruce Betts on 2014/03/21 02:10 CDT

Examine the threat of near Earth asteroids and begin exploring the Jupiter System in this video of class 7 of Bruce Betts' Introduction to Planetary Science and Astronomy class.

Read More »

LPSC 2014: Plate tectonics on another world: Europa

Posted by Emily Lakdawalla on 2014/03/19 01:28 CDT | 7 comments

Simon Kattenhorn and Louise Prockter may finally have found subduction zones on Europa, which would it the only other place in the solar system besides Earth that is known to have active plate tectonics.

Read More »

Through a Glass, Darkly

Posted by Bill Dunford on 2014/01/13 12:46 CST | 5 comments

When sent from deep space, even imperfect images can inform and amaze.

Read More »

Destination: Europa!

Posted by Steve Vance on 2013/12/16 01:36 CST | 5 comments

It's time to reassess Europa exploration, past, present and future. The Destination Europa! session at AGU, inspired by the eponymous website and movement, didn't take exactly that message as its theme, but it's what I got from the presentations. What an ELECTRIFYING meeting this has been for Europa exploration!

Read More »

A serendipitous observation of tiny rocks in Jupiter's orbit by Galileo

Posted by Emily Lakdawalla on 2013/05/17 09:54 CDT | 3 comments

A look at an older paper describing Galileo's possible sighting of individual ring particles orbiting Jupiter as companions to its inner moon Amalthea.

Read More »

Galileo's images of Gaspra

Posted by Emily Lakdawalla on 2013/03/01 06:43 CST | 2 comments

Last week I trawled the archives to find all of Galileo's images of asteroid Ida; this week, I turned to Gaspra.

Read More »

Galileo got so many more images of Ida than I realized

Posted by Emily Lakdawalla on 2013/02/22 04:14 CST | 1 comment

While writing up the cruise-phase issues of the Galileo Messenger a couple of weeks ago, I came across a fuzzy montage of images of Ida that I had not seen before. So I decided to spend some time digging into the Planetary Data System to see if there were more images to be found. I found lots and lots pictures that I'd never seen before!

Read More »

Galileo Messengers: Cruise to Venus, Earth, Gaspra, Earth, Ida, and almost to Jupiter

Posted by Emily Lakdawalla on 2013/02/05 08:40 CST | 2 comments

It's taken me a year to face the emotionally draining task of reading and writing about Galileo's cruise phase as chronicled in the mission's newsletters.

Read More »

My ever-popular asteroids-and-comets montage, now in color, with bonus Toutatis

Posted by Emily Lakdawalla on 2012/12/18 04:26 CST | 9 comments

My collage of all the asteroids and comets visited by spacecraft is probably the single most popular image I have ever posted on this blog. I've now updated it to be in color and to include Toutatis.

Read More »

In Honor of JUICE, a New View of Europa

Posted by Ted Stryk on 2012/05/07 05:30 CDT | 2 comments

To celebrate ESA's selection of the JUICE mission to Jupiter, Ted Stryk produced a new global view of Europa from Galileo data.

Read More »

Blast from the past: The Galileo Messenger

Posted by Emily Lakdawalla on 2012/01/20 10:42 CST

From 1981 to 1997, the Galileo mission published an approximately quarterly newsletter called the Galileo Messenger. It eventually ran to 45 issues, until the end of the Prime Mission. The first 20 were published before Galileo ever got off the ground. That period is the subject of this post.

Read More »

Is Europa's ice thin or thick? At chaos terrain, it's both!

Posted by Emily Lakdawalla on 2011/11/17 04:32 CST | 6 comments

Among Europa scientists there are two warring factions: the thick-icers and the thin-icers. The question is how thick is the ice shell that overlies Europa's subsurface ocean (the existence of which pretty much everyone agrees on).

Read More »

Exposing Io's true colors

Posted by Jason Perry on 2010/08/20 05:15 CDT

Thanks to its active volcanic activity and sulfur-rich surface, Io is one of the most colorful worlds yet seen in the Solar System, save the Earth of course

Read More »

400 Years of the Galilean Satellites

Posted by Emily Lakdawalla on 2010/01/07 03:34 CST

It was 400 years ago today that Galileo discovered smaller planets attending the planet Jupiter.

Read More »

Aloha, Io

Posted by John Spencer on 2009/06/08 01:49 CDT

Taking a look at Jupiter's moon, Io, from Hawaii.

Read More »

Facebook Twitter Email RSS AddThis

LightSail - Flight by Light

Support LightSail!

In 2016, The Planetary Society’s LightSail program will take the technology a step further.

I want to help!

Featured Images

The Face of a Comet

Antares
Hayabusa 2 and DCAM3
Hayabusa 2 at Gate Position
More Images

Featured Video

View Larger »

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!