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Major Moons

We have completed reconnaissance missions to all eight of the planets, and will soon perform surveys of two dwarf planets, Ceres and Pluto. Among the most compelling targets for future flagship missions are the solar system's moons. Can we use Phobos as a base from which to tele-operate Mars missions? Is there prebiotic chemistry or even life within the buried oceans of Europa, Ganymede, or Enceladus, or in the methane-ethane rivers and lakes on Titan? What could we learn about the Kuiper belt by studying Neptune's captured moon Triton? What could human explorers do on our own Moon using technology developed over the last 40 years?

These questions drive interest in future missions among scientists, but it's an uphill battle to sell decisionmakers on the value of expensive missions to objects that are "only" moons. For us to capitalize on the successes of our reconnaissance missions, it is essential to educate the public about the reasons that other worlds' moons are so exciting, and that they are worlds every bit as worthy of study as the planets.

Recent Blog Entries about our Moon, Phobos, Europa, Ganymede, Enceladus, Titan, and Triton

Chang'e 3 update: Both rover and lander still alive at the end of their eighth lunar day

Posted by Emily Lakdawalla on 2014/07/21 07:26 CDT | 5 comments

Despite the fact that it hasn't moved for 6 months, the plucky Yutu rover on the Moon is still alive. Its signal is periodically detected by amateur radio astronomers, most recently on July 19. A story posted today by the Chinese state news agency offers a new hypothesis to explain the failure of the rover's mobility systems.

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Mars and Europa: Contrasts in Mission Planning

Posted by Van Kane on 2014/07/19 02:08 CDT | 30 comments

Several announcements for proposed missions to Mars and on the planning for a NASA return to Europa that highlight the contrasts in planning missions for these two high priority destinations.

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Capitol Hill Responds to the Lure of Europa

Posted by Casey Dreier on 2014/07/18 01:54 CDT | 2 comments

A standing-room only crowd learned the lure of Europa, the moon of Jupiter with more liquid water than the Earth, at a special Planetary Society event on capitol hill.

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Trundling Across the Moon

Posted by Mark Robinson on 2014/07/11 12:01 CDT | 1 comment

High resolution images from the Lunar Reconnaissance Orbiter Camera detail the 1973 path of the Soviet rover Lunokhod 2.

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NASA selects Planetary Society LIFE Proposal

Posted by Bruce Betts on 2014/06/19 06:10 CDT | 5 comments

NASA has selected a Planetary Society proposal to study accommodation of the Society’s LIFE (Living Interplanetary Flight Experiment) biomodule on NASA’s Asteroid Redirect Mission (ARM).

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We could find life on another planet, but do we have the will?

Posted by Bill Nye on 2014/06/19 10:46 CDT | 19 comments

Are we alone in the universe? This month’s National Geographic cover story takes a look at the question, and I weighed in on the subject.

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Making the Rounds on Capitol Hill

Posted by Bill Nye on 2014/06/04 04:54 CDT | 2 comments

There's an old saying about Washington, D.C.: it’s a small town, based on relationships. We are establishing very good relationships with members of the U.S. Congress and the Administration. Three of us made the rounds recently, going from one Congressional Member’s office to another to support planetary exploration and a mission to Europa. Our team included Casey Dreier, our Director of Advocacy; Bill Adkins, our lobbyist in Washington; and me.

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Lunar Reconnaissance Orbiter's Ongoing Adventure

Posted by Samuel Lawrence on 2014/05/29 06:16 CDT | 5 comments

A few people think that when it comes to the Moon, because we’ve “been there, and done that,” there is nothing new left to discover. But that viewpoint could not be farther from the truth!

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The Planetary Society Supports NASA's Asteroid Initiative

Posted by Casey Dreier on 2014/05/27 01:02 CDT | 22 comments

The Planetary Society strongly supports NASA's asteroid initiative, including the goal of redirecting an asteroid to the vicinity of the Moon. But an independent cost estimate is needed, and needed soon.

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A Reluctant Dance Towards Europa

Posted by Van Kane on 2014/05/14 12:42 CDT | 15 comments

For the last two years, NASA has been the shy partner refusing to get on the dance floor, and Congress has been the aggressive partner insisting on a dance now. Recently, NASA has said maybe on another night but only if it’s a cheap date. While NASA says no for now, Congress looks to be willing to slip the band a cool $100M – on top of $150M already paid – to keep the music playing, but (to keep the metaphor going) has not been willing to fully commit itself to paying the bigger bill to rent the dance hall. The dance, of course, is the continuing attempt by Congress to have NASA commit to a mission to explore Europa, and NASA’s attempts to delay a mission well into the 2020s.

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