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Small BodiesStories, updates, insights, and original analysis from The Planetary Society.
MOM's Second Anniversary at Mars
On Mars Orbiter Mission’s second anniversary of Mars arrival, ISRO has (finally!) made available to the public data from its first year in orbit.
What's up in the solar system, October 2016 edition: ExoMars arrives!
ExoMars Trace Gas Orbiter arrives on October 19, and it will deliver the Schiaparelli lander to its brief life on the Martian surface. Juno's headed into its science orbit, MOM has released science data, and New Horizons will finally finish downlinking Pluto flyby data.
Mars Exploration Rovers Update: Opportunity Exits Marathon Valley then Rocks Spirit Mound
It was another September to remember for Opportunity as she cruised through the Lewis and Clark Gap and out of Marathon Valley, then hiked downslope, leading the first overland expedition of the Red Planet to Spirit Mound, a new site deep in Endeavour Crater’s rim.
Rosetta is gone
Today there is one less spacecraft returning science data from beyond Earth. The European Space Operations Centre received the final transmission from Rosetta at 11:19 September 30, UT.
OSIRIS-REx’s cameras see first light
As OSIRIS-REx speeds away from Earth, it’s been turning on and testing out its various engineering functions and science instruments. Proof of happy instrument status has come from several cameras, including the star tracker, MapCam, and StowCam.
Rosetta spacecraft may be dying, but Rosetta science will go on
The Rosetta mission will end tomorrow when the spacecraft impacts the comet. ESA took advantage of the presence of hundreds of members of the media to put on a showcase of Rosetta science. If there’s one thing I learned today from all the science presentations, it’s this: Rosetta data will be informing scientific work for decades to come.
Dawn Journal: 9th Anniversary
Nine years ago today, Dawn set sail on an epic journey of discovery and adventure. The intrepid explorer has sailed the cosmic seas and collected treasures that far exceeded anything anticipated or even hoped for.
Rosetta end-of-mission event schedule
A schedule of what to expect during Rosetta's final hours September 29 and 30, and how you can follow online.
New Findings are Conclusive: Europa is crying out for exploration
New scientific findings add to the evidence that Europa is spouting its liquid ocean into space. NASA has a mission to Europa in the works, but it wouldn't launch for at least a decade. Congress can make it faster, but it all depends on whether they can pass a budget this year.
Juno and Marble Movie update at Apojove 1
Juno is on its second of two long orbits around Jupiter, reaching apojove (its farthest distance from the planet) today.
Some beautiful new (old) views of Neptune and Triton
Beautiful new amateur work with 27-year-old Voyager data.
One year remains in the Cassini mission
Cassini ends a year from today, which is sad. But the final year of the mission is going to be awesome.
Gaia's first galaxy map
The astronomy world is abuzz today because of ESA's announcement of the first release of data from the Gaia mission. Gaia is a five-year mission that will eventually measure the positions and motions of billions of stars; this first data release includes positions for 1.1 billion of them, and proper motions for 2 million.
A deep dive into the highest-resolution Voyager Jupiter data
A few weeks before the first Juno high resolution imaging, I decided to take a look at Voyager color images at various resolutions, with particular attention to high-resolution mosaics.
Cassini's camera views of Titan's polar lakes in summer, processed into pseudocolor
Titan's north polar lakes are well-lit by summer sun in these recent Cassini images. Image processing enthusiast Ian Regan shares his recipe for processing the longer-wavelength Titan images into visually pleasing
Rosetta end-of-mission update
The European Space Agency has shared plans for the end of the Rosetta mission scheduled for September 30, just three weeks from now. The landing site will be located on the
Field Report From Mars: Sol 4482 - September 2, 2016
Opportunity is about to leave Marathon Valley for good and head south into the next valley, marking the beginning of the current extended mission plan.
OSIRIS-REx blazes into evening sky, starting journey to asteroid Bennu
NASA's OSIRIS-REx spacecraft is safely en route to asteroid Bennu following an evening liftoff from Cape Canaveral, Florida.
Carrying names of 440,000 well-wishers, OSIRIS-REx ready for journey to Bennu and back
OSIRIS-REx is ready to begin its journey to Bennu and back. The asteroid was named by a Planetary Society contest winner, and the spacecraft bears the names of 440,000 well-wishers.
Philae spotted on the surface of comet Churyumov-Gerasimenko
Ever since its landing, Philae has been elusive. It went silent just three days later and never returned any more science data, though it made brief contact with the orbiter last summer. Now, just a month until the planned end of the Rosetta mission, the orbiter has finally located the lander in a stunning high-resolution view of the surface.