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Small BodiesStories, updates, insights, and original analysis from The Planetary Society.
Cassini eyes the eyeball
On Saturday, Cassini flew within 9,500 kilometers of Mimas, the innermost of the medium-sized icy moons of Saturn.
Calypso coolness
Cassini got pretty close to Calypso yesterday, on the way in to Mimas. Calypso is one of the smaller moonlets of Saturn.
Twenty years since Voyager's last view
On Sunday comes the twentieth anniversary of an iconic image from the Voyager mission: the
A Space Carnival (#140) and some new names for Enceladus
This week the Carnival of Space is over at one of my favorite new blogs, Lights in the Dark. Actually it's not so new -- evidently this week marks its first anniversary!
Hooray! Cassini's tour has been extended for SEVEN MORE YEARS!
NASA has just announced that once Cassini's Equinox Mission runs out in June of this year, they will extend it a further seven more years, long enough for the spacecraft to see Saturn through its solstice!!
Cassini Aegaeon and Prometheus awesomeness
There were many, many treats waiting on the Cassini raw images website this morning. Yesterday, Cassini traversed the G ring, taking photos all the way.
Report #2 from the New Horizons Science Team Meeting
The second report by Ted Stryk from the New Horizons science team meeting, focusing on the search for Kuiper belt object (KBO) targets.
Figuring out the shape of Mars (and other places)
An amateur named Bernhard Braun (
Report #1 from the New Horizons Science Team Meeting
The New Horizons science team is meeting this week. Ted Stryk was invited to attend the meeting, and he sent the following notes from the first day.
Highlights from the January 1, 2010 Cassini imaging data release
The January 1, 2010 Cassini imaging data release includes everything acquired by Cassini from January 1 to March 30, 2009 in all its high-quality glory.
400 Years of the Galilean Satellites
It was 400 years ago today that Galileo discovered smaller planets attending the planet Jupiter.
Planetary Society Advent Calendar for December 31: Uranus
Did you think I was going to skip Uranus? How could I?
Planetary Society Advent Calendar for December 29: Rhea
Rhea? You might be asking. Rhea? When Saturn has so many more interesting moons? Hear me out.
Planetary Society Advent Calendar for December 28: Ariel
Here's yet another of the moons of Uranus for you: Ariel, a near-twin in diameter to Umbriel, but apparently with more interesting geology.
Planetary Society Advent Calendar for December 27: Prometheus (hot off the presses!)
This one is fresh from the spacecraft! The data were captured yesterday, December 26, by Cassini during its best yet imaging encounter with the small ringmoon Prometheus, and showed up on the Cassini raw images website today.
Planetary Society Advent Calendar for December 26: Titan
Titan is a weird alternate-universe Earth, surprisingly similar to our own planet in some ways, but not at all like our planet in others.
Planetary Society Advent Calendar for December 25: Double planet
To those of you who celebrate the holiday, merry Christmas! I hope Santa was good to you.
Planetary Society Advent Calendar for December 24: Ganymede
I think if you polled most space fans about their favorite moons of Jupiter, Ganymede would come in a consistent third behind Europa and Io. It's just not fair.
Awesome Cassini mutual event movies
I love posting animations of Cassini images that I compose from frames grabbed from the mission's raw images website, but they are shoddy compared to the versions that eventually come out from the mission's imaging team.
Planetary Society Advent Calendar for December 21: Miranda
Miranda is the one moon of Uranus for which we have very good images from Voyager 2, and that was a stroke of luck, because low-resolution shots of all of Uranus' moons would have told us that it was, geologically speaking, the most dramatic of the five biggest ones.