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Stories, updates, insights, and original analysis from The Planetary Society.
Stellar explosion
The Sun just spat out a huge coronal mass ejection, an event made visible by the watchful cameras on SOHO.
Dione and Titan
It's axiomatic that as soon as I post about pretty Cassini pictures, another set of pretty photos will appear on the raw images website.
A feast of pretty pictures from Cassini
Cassini has it almost too easy. Point at anything in the Saturn system and you're guaranteed of a shot that looks, at least, pretty.
Venus Express evidence for recent hot-spot volcanism on Venus
Venus? What? Somebody still studies that planet? Yes, and in fact there's an active spacecraft there: Venus Express, the poor little sister to Mars Express.
A busy day for Cassini: Dione plus bonus Enceladus and Janus
The Cassini Saturn orbiter just completed its second very close flyby of Saturn's mid-sized iceball moon Dione, and the images from that encounter have been streaming onto the Cassini raw images website this morning.
Pretty (strange) picture from HiRISE: Dust flow crater?
Yesterday was the Mars Reconnaissance Orbiter HiRISE team's latest flood of archived images, 1,025 of them. I skipped forward to page 42 (what other number would I pick?) and started browsing from there.
Water on the Moon: Direct evidence from Chandrayaan-1's Moon Impact Probe
I've reported before about the detection of water on the surface of the Moon by the Chandrayaan-1 orbiter and the Deep Impact and Cassini spacecraft, but what I'm about to tell you about is actually more exciting: the direct detection of water in the lunar atmosphere by the Chandrayaan-1 Moon Impact Probe.
Pretty picture: Rhea, rings, and two little moons
Here's a lovely picture whose components came down from Cassini a few days ago.
Pretty picture: Fly through the aurora
Space Station astronaut Soichi Noguchi is an awesome photographer. This image is going straight into the
Strong geomagnetic storm today
This morning I received a bulletin warning of a
Pretty picture: An unexplained chain of elliptical craters on the Moon
Here's the first cool pic I've managed to produce from the recently-released Lunar Reconnaissance Orbiter Camera data set.
My arduous journey to the Lunar Reconnaissance Orbiter Camera images
It's been two weeks since Lunar Reconnaissance Orbiter mission released a flood of data to the Planetary Data System, but I haven't posted any pictures dug out of the camera data yet. This post will explain why.
HiWish fulfilled (or, be careful what you HiWish for)
Yesterday the Jet Propulsion Laboratory issued a press release announcing the first eight image releases that resulted from HiWish suggestions.
Quaoar: A rock in the Kuiper Belt
The paper I'm writing about today,
Mimas' cold region: another new mystery for Cassini to explore
This new map of Saturn's moon Mimas -- representing data captured by the CIRS thermal infrared spectrometer during Cassini's February 13, 2010 flyby -- is just baffling.
Opportunity's at the twin craters
Just a little update here to post a Navcam panorama from Opportunity showing that the rover successfully arrived yesterday at the doublet crater she's been aiming for since she left Concepcion a couple of weeks ago.
Opportunity at Concepción from orbit
I saw this image at the Lunar and Planetary Science Conference so am happy they released it: a view of Opportunity sitting on the north rim of the little, fresh Concepción crater, taken on sol 2153 (February 13, 2010).
What planet is THIS?
Check out this watery world! It's clearly a computer simulation of something, but of what? Can you guess?
Where neon falls like rain
As if Titan's methane rain weren't weird enough, Jupiter's now thought to have helium-neon rain.
A new view of Callisto
Here's a lovely amateur-produced color image of Jupiter's moon Callisto, or, as its artist Daniel Macháček calls it,



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