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Stories, updates, insights, and original analysis from The Planetary Society.
A debate in Meridiani Planum
There was a big news splash about two articles that appeared in Nature about Mars Exploration Rover Opportunity's landing site. The articles suggest two theories for the formation of the layered sulfur-rich deposits at Meridiani Planum that do not involve standing liquid water.
Pretty Cassini pictures from near the ring plane
It's been a while since I posted some Cassini pictures here just because they were pretty.
Analyzing the first published Huygens results
I am working my way steadily through the seven Huygens papers that were released by Nature magazine Wednesday on their
Cassini Photographs the Fountains of Enceladus (and gets pics of Tethys, Janus, Epimetheus, and the G ring too)
Emily tackles this morning's ESA press conference about Huygens.
Big News for Hayabusa: It wasn't hovering, it landed!!
Remember how Hayabusa was virtually still for 30 minutes? JAXA is now saying that Hayabusa actually touched down -- and more than that, they may even have a sample.
A fun picture for holiday travel
A fun NASA explainer just crossed my email inbox and I thought I'd share it.
Closer still to Itokawa
Hayabusa reached an altitude of about 560 meters above Hayabusa at 17:30 UTC. And at 18:00 UTC they are at 500 meters. This is still farther above the asteroid than the asteroid is big...there is still a long way to go before Hayabusa touches down...
Getting ready for Hayabusa's touchdown
In a further update on Hayabusa's status, we have been contacted by Kazuya Yoshida of the Space Robotics Laboratory at Tohuku University. Yoshida reports that the touchdown is now planned to take place
Another Hayabusa update: small delay
There has been a delay of just about a day in JAXA's plans for landing Hayabusa on Itokawa.
Amazing Hayabusa images
These photos pretty much speak for themselves. They are amazing. Hayabusa saw its own shadow on Itokawa, and took a photo of the released target marker.
An update on the Huygens Doppler Wind Experiment
While I was at the Division of Planetary Sciences meeting in Cambridge in September I had a chance to chat with David Atkinson, who's a member of the Doppler Wind Experiment team on Huygens. They and the other instrument teams have been plugging away at analyzing their data.
The Planetary Society and the Search for Extrasolar Planets
Almost since it was founded in 1980, The Planetary Society has been there for the search for other worlds.
Cassini Poised to Pinpoint Huygens' Landing Site At Last
I've just posted a very brief update on the upcoming Titan flyby, which will be the first to include RADAR imaging across the Huygens landing site.
NOW Mars is spectacular
Back in August, there was a false alarm being circulated by email that Mars was going to be super-close to Earth on August 27.
A way-cool Cassini picture: rings, Titan, Dione, Prometheus
I just noticed this picture on the Cassini raw images website. I love these
Animation from Cassini's approach to Dione
The images from Cassini's Dione encounter yesterday have started coming back, and there is a really cool set of 16 pictures of Dione and Rhea.
Dione encounter today
Cassini is already on its way in to a close, 500-kilometer encounter with Dione -- it's less than four hours away now, at 17:52 UTC.
Hyperion in color
Here is a gorgeous color mosaic of Hyperion assembled by amateur image processor Mattias Malmer from images from the recent flyby.
A new Cassini data release to the Planetary Data System
Yesterday, this quarter's release of Cassini data showed up at the Planetary Data System (PDS). The PDS is the public repository for all of NASA's data.
A piece of a new picture from Hayabusa
The Hayabusa mission has proven to be a bit of a tease -- they were releasing lots of images to the public as they approached asteroid Itokawa, but once they arrived, the image releases shut down entirely. There is finally a little postage stamp of an image captured by Hayabusa at



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