Stories, updates, insights, and original analysis from The Planetary Society.
New Churyumov-Gerasimenko Shapemodel!
Mattias Malmer shares his latest shape model of Comet 67P/Churyumov–Gerasimenko, created using data from the Rosetta spacecraft.
Remember Comet Siding Spring? Mars Orbiter Mission got photos, too
A set of photos released by Mars Orbiter Mission last week completes the set of Mars spacecraft observations of the comet. Now we wait for science results!
Rosetta imaged Philae during its descent -- and after its bounce
This morning ESA released a set of images of the Philae lander taken by the Rosetta orbiter during -- and after -- the lander's first touchdown. The images contain evidence for the spot Philae first touched the comet, and a crucial photo of Philae's position several minutes into its first long bounce.
Brief Philae "Morning After" update: First ÇIVA panorama from the surface
I'm just getting up to speed on the news from overnight, which is mostly good: Philae remained in contact with the orbiter (which means the CONSERT radar sounding experiment was working), and it's sitting stably on the surface, although it's not anchored in any way. And they released the first ÇIVA image from the ground!
Philae status, a day later
The Philae team scrambled all morning to comprehend the initially confusing status of the lander, and the picture is much clearer today. Speaking of which, there are lots more pictures!
PHILAE HAS LANDED! [UPDATED]
The landing happened on time just after 16:02 UT today! Philae mission manager Stephan Ulamec said:
Report from Darmstadt: Philae status and early Rosetta results from DPS
I'm reporting live from the press room at the European Space Operations Centre in Darmstadt, Germany. There's little news on Philae yet except that its status is good. Meanwhile, Rosetta scientists presented their first early comet results at the Division for Planetary Sciences meeting in Tucson, Arizona, which I watched from afar using Twitter.
Mars Exploration Rovers Update: Opportunity Images Comet, Ducks Storm, Departs Ulysses
As winds whirled and converged to the west of Endeavour Crater, Opportunity's power dropped dramatically in October, but the Mars Exploration Rover (MER) pressed on. By month's end, the robot field geologist had completed her assignments – including capturing the first close-in shot of a comet from the surface of the Red Planet – and was roving onward through the darkness, driving the mission into the 130th month of what started out more than 10-and-a-half years ago to be a 3-month tour.
Seven Mars spacecraft attempted observations of comet Siding Spring. How did they go?
It's been two weeks since comet Siding Spring passed close by Mars, and six of the seven Mars spacecraft have now checked in with quick looks at their images of the encounter. I round up all the results.
A (Difficult) Day in the Solar System
After a bad day on the launch pad, some perspective.
A feast of comet features from Rosetta at Churyumov-Gerasimenko
I have been horribly behind in posting images from Rosetta's exploration of comet 67P/Churyumov-Gerasimenko, and that's a shame, because the spacecraft has lately been exploring the comet from a range of only 10 kilometers. From that range, the NavCam gets sub-meter resolution, and we're seeing a menagerie of odd surface features
Rosetta NAVCAM's Shades of Grey
What do “light” and “dark” mean for an object like Comet 67P/C-G? Here are some details on how Rosetta's NAVCAM images are taken and displayed to make a wide range of surface features possible.
Herschel observations of Comet Siding Spring initiated by an amateur astronomer
The European satellite Herschel acquired images of Comet Siding Spring before its death in 2013 — thanks to an observing proposal from an amateur astronomer!
Status update: All Mars missions fine after Siding Spring flyby
All seven Mars spacecraft are doing perfectly fine after comet Siding Spring's close encounter with Mars.
Watching Siding Spring's encounter with Mars
The nucleus of comet Siding Spring passes close by Mars on Sunday, October 19, at 18:27 UTC. Here are links to webcasts and websites that should have updates throughout the encounter.
Field Report from Mars: Sol 3808 — October 10, 2014
Opportunity will become a comet flyby mission beginning in mid-October. The comet Siding Spring will zoom past Mars at a distance of about 135,000 km on October 19.
Mars Orbiter Mission shifts orbit to take cover from Siding Spring
With only 10 days remaining until the arrival of Comet Siding Spring at Mars, ISRO has shielded the Mars Orbiter Mission (MOM) from the comet. On Tuesday MOM’s orbit was altered so as to move it behind the Red Planet when the comet arrives. MOM will carry out observations of the comet and its Mars Colour Camera will click images of it.
Comet Siding Spring: Exciting times
We're now less than two weeks away from Comet Siding Spring buzzing ridiculously close to Mars, and the excitement is building - in both good and bad ways...
Preparing for A-MAVEN Science!
How can we use MAVEN to learn about Comet Siding Spring, passing very close by Mars this month?
Mattias Malmer's amazing 3D views of Churyumov-Gerasimenko
I'm thrilled to be able to share with you all a spectacular set of images of Rosetta's comet, produced from NavCam data by a master space image processing enthusiast.