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Stories, updates, insights, and original analysis from The Planetary Society.
Send Your Name to Venus, now with a certificate!
I wrote a few weeks ago about a new Send Your Name to Venus campaign conducted by the Akatsuki mission. Now The Planetary Society has arranged with JAXA to collect names and messages on our website.
Planetary Society Advent Calendar for December 8: Itokawa
I love this asteroid. It's just so weird-looking.
Carnival of Space and Planetary Radio
This week's Carnival of Space may be found at Steve's Astro Corner.
Planetary Society Advent Calendar for December 7: Jupiter
Jupiter has been high overhead at sunset for several months, a brilliant light that's easy to spot even when the sky is still bright at dusk; but it's now moving quickly to the west as Earth speeds ahead of Jupiter's more stately march around the Sun.
Four hundred and fourteen years since Galileo
Galileo, the scientist, discovered the Galilean satellites of Jupiter four hundred years ago next month, while Galileo, the mission, arrived at Jupiter to study those moons in situ fourteen years ago Sunday.
Planetary Society Advent Calendar for December 6: Umbriel
Umbriel is the darkest moon in a pretty dark place in the solar system, the Uranus system.
Planetary Society Advent Calendar for December 5: Epimetheus
Epimetheus is one of the many small moons of Saturn that are referred to by the Cassini mission team as
Planetary Society Advent Calendar for December 4: Mercury
Mercury is the smallest of the eight planets and, like Uranus and Neptune, has so far been studied only during flyby encounters.
Planetary Society Advent Calendar for December 3: Europa
From a distance, Jupiter's fourth largest moon Europa is the smoothest object in the solar system; its outline traces out a perfect circle.
Planetary Society Advent Calendar for December 2: Mathilde
253 Mathilde is the largest asteroid that has ever been visited by a spacecraft. It's held that distinction for more than twelve years, but next year it'll be upstaged by the considerably larger 21 Lutetia, which Rosetta will fly by on July 10.
Planetary Society Advent Calendar for December 1: Dione
I've always loved advent calendars and the way they both managed and heightened my anticipation of the gift-opening frenzy of Christmas morning.
Dawn Journal: In the Asteroid Belt, but Far from Asteroids
Dawn entered the main asteroid belt on November 13. As it ventures ever deeper into this vast collection of material between Mars and Jupiter, it may be tempting to think of the spacecraft constantly dodging asteroids.
Mars Exploration Rovers Update: Spirit Turns Wheels, Opportunity Rests at Rare Martian Rock
The Mars Exploration Rovers managed to make history and uncover history in November and that put both Spirit and Opportunity in the planetary exploration spotlight during the 71st month of an overland expedition that was supposed to be a three-month tour.
Saturn's aurora, even better than before
The Cassini imaging team have posted their own processed and captioned version of the Saturn's aurora movie that I posted a preview of about six weeks ago, and it was worth the wait.
Two more awesome pictures from the Enceladus flyby
I'm getting to be a broken record here, but I can't stop looking at these photos from the Enceladus flyby.
Prepare for your jaw to hit the floor when you see these pictures of Enceladus
Wow, just wow. I didn't know what to expect from the second flyby of Saturn's geyser moon Enceladus in November, which happened yesterday.
Another great Enceladus shot
Here's a 4-frame mosaic of Enceladus images -- just another everyday spectacularly alien landscape.
Hayabusa's still coming home: JAXA engineers come up with yet another creative solution
Trouble has come time and again to JAXA's little Hayabusa asteroid sample return mission, yet the mission's engineers always come up with new and creative ways to solve problems.
Space Imaging II: Getting Started with MER and Cassini Raw Images now available for download
I probably crammed too much into today's class: an hour-and-a-half whirlwind tour through the cameras on the rovers and Cassini, how to access their raw images on the Internet, and some basic processing that you can do with each of them.
Encouraging motion on Spirit
It really looks like the second attempt at driving Spirit out of the trap has had the hoped-for result: some forward progress (maybe about a centimeter), and no evidence for further downward sinking.



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Mercury
Venus
Earth
Mars
Jupiter
Saturn
Uranus
Neptune
Small Bodies