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Stories, updates, insights, and original analysis from The Planetary Society.
Last Door in the Planetary Society Advent Calendar: Earth, again
I know I already posted Earth once before. But I could not resist winding up the calendar with this view of a new Earth, for the new year.
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 30: Tempel 1
Looking over the list of planets, moons, and smaller bodies I posted so far, I realized I didn't have an image of a comet yet.
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.
Planetary Society Advent Calendar for December 23: Deimos
Mars' moon Deimos never gets as much love as Phobos.
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 22: Venus
Venus is such a beautiful, brilliant light in the sky. (When it's up; just now Venus is actually near solar conjunction, so we'll have to wait a bit for it to grace the heavens.)
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.
Planetary Society Advent Calendar for December 20: Iapetus
Iapetus! I'm always interested in Cassini images, but five years ago this month I was refreshing the Cassini raw images website several times a day, eagerly anticipating the mission's first good encounter with Iapetus.
Planetary Society Advent Calendar for December 19: Eros
Not quite ten years ago, the Near Earth Rendezvous (NEAR) spacecraft arrived at the near-Earth asteroid Eros. NEAR accomplished many firsts.
Planetary Society Advent Calendar for December 18: Neptune
Here's Neptune, but not quite like you've ever seen it before.
Cassini VIMS sees the long-awaited glint off a Titan lake
The Cassini mission announced today the first observation of a specular reflection off of a lake on Titan. A specular reflection is a mirror-like flash, and you only get one when you have a mirror-like surface -- very, very smooth.
Planetary Society Advent Calendar for December 17: Proteus
Proteus is a weird name for this world. It's the second-largest moon of Neptune, and so it's named (as are all of Neptune's moons) for deities associated with the sea.
Watch that front wheel spin!
Holy cow, look at that right front wheel spin. I am alternately amazed and horrified by this animation.
Planetary Society Advent Calendar for December 16: Mimas
Mimas is the anti-Enceladus.