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Stories, updates, insights, and original analysis from The Planetary Society.
Postcards from Pluto
Amanda Zangari shares what it's like to be a scientist on New Horizons, and explains some of the day-to-day workings of the mission behind the scenes.
Comet Siding Spring Mars encounter: How to determine the orbit of a comet?
In the quest to track Comet Siding Spring, the Mars Express team tells us how computing the orbit of a comet isn't as straightforward as science fiction would have us believe.
Pretty Picture: Three Wanderers
With all the excitement happening on missions criscrossing the solar system, I often forget to enjoy the views of our solar system that we can achieve from home. Amateur astronomers don't make the same mistake. Here's a lovely photo that Stuart Atkinson sent me, captured last night from Kendal, England, showing four special wanderers.
The new Cosmos: Standing Up in the Milky Way
My daughters liked the new Cosmos and want to watch next week. I thought it was a successful beginning for a long series, and I think it'll become a weekly viewing event for our family. I hope other families think the same.
The Very Large Telescope sights Rosetta's comet target, sees activity beginning
Rosetta's comet target, 67P/Churyumov-Gerasimenko, has emerged from behind the Sun as seen from Earth, and the Very Large Telescope has photographed it. The new images show that cometary activity has already begun as Rosetta approaches for its August rendezvous.
That time I took a selfie with Neil Tyson and the President of the United States
Last week, my fellow Board Member Neil deGrasse Tyson and I were invited to be presenters at the first edition of the White House Film Festival. Neil asked the President if we could take a selfie with him. In those few moments, the President, Neil, and I spoke about science and space exploration.
PlanetVac at the IEEE Aerospace Conference
PlanetVac project leader Kris Zacny of Honeybee Robotics reports on presenting results of the Planetary Society project PlanetVac that created a prototype planetary dirt sampling system and tested it under Martian pressures.
[Updated] To Europa!...Slowly. First Impressions of NASA's New Budget Request
Europa may get a mission...eventually. We give our first take on the 2015 NASA Budget request. How does Planetary Exploration fare? Which projects were cancelled? Will NASA capture an asteroid? And most importantly, what can you do about it?
Why Cosmos should matter, especially to Hollywood
For a town dependent on Stars, there are far too few people here who look up at the sky. But come this Sunday, March 9, the epic series of science, space and humanity will return: Cosmos: A Spacetime Odyssey. Why does it matter for Hollywood, specifically? I'll tell you why it will. And then why it should.
Hypervelocity Cratering and Riding Out the Risk
Today's update from the Mars Express team contains the realisation that, for some of the risks associated with October's Siding Spring flyby, there may not be much the team can do.
Curiosity update, sols 549-562: Shooting past Kylie on the road to Kimberley
In a series of drives, Curiosity flew past the
NASA Wants to Explore Europa On the Cheap
NASA announced today that their Europa mission concept studies will be for a sub-$1 billion spacecraft, a lower level than previously imagined for a mission to this watery moon.
2015 will be the Year of the Dwarf Planet, and you need to tell people about it!
I am very excited about 2015, more so than I have been about any year since I started working at The Planetary Society. Dawn will enter orbit at Ceres, and New Horizons, which will fly past Pluto and Charon. But if we want this kind of exploration to continue, I'm challenging you, dear readers, to tell the world why such non-planetary worlds are compelling places to go exploring.
Mars Exploration Rovers Update: Opportunity Cruises Through Winter Solstice, Into Year 11
The Mars Exploration Rover mission put its 10th anniversary in the rear view mirror in February and roved on into its 11th year of surface operations at Endeavour Crater.
A new map of Mars from some pretty old data
The United States Geological Survey recently issued an improved version of the Viking color map of Mars. This 40-year-old data set still provides the prettiest global-scale map of the planet.
Checking in on Chang'e 3 and Yutu from Lunar Reconnaissance Orbiter: Yep, still there!
Seeing hardware that was built by human hands sitting on the surface of another planet never, ever gets old. Today, the Lunar Reconnaissance Orbiter Camera team released two new images of Chang'e 3 and Yutu on the Moon.
Space is really, really big – except sometimes it isn’t
Here's the next installment in the continuing story of how the Mars Express team is preparing for Comet Siding Spring flyby, 19 October 2014. This week: introducing the spacecraft's subsystems and structure – and wondering how we can absorb impacts.
Brief Yutu update: Slightly more detail on what's keeping rover from roving
Over the weekend, Chinese state news agency Xinhua reported in both Chinese and English a little bit more information on what has stilled the Yutu rover's motions across the lunar surface:
Eyes and stopwatch are all that are needed to help measure an invisible asteroid
Would you like to be part of one of the largest citizen-science efforts in the history of astronomy? The International Occultation Timing Association (IOTA) invites you to join in the campaign to observe and time the best and brightest asteroid occultation ever predicted to occur over a populated area – and no telescope is required!
Dawn Journal: Maneuvering Around Ceres
Continuing its daring mission to explore some of the last uncharted worlds in the inner solar system, Dawn remains on course and on schedule for its rendezvous with dwarf planet Ceres next year.



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