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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 and LADEE updates: Yutu active again, LADEE didn't detect landing

Posted by Emily Lakdawalla on 2013/12/20 06:09 CST | 3 comments

Chinese state television broadcast a display of a Chang'e 3 lander image; the Yutu rover is awake; and LADEE reports a surprising non-detection of the Chang'e 3 landing.

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NASA re-creates the Apollo 8 Earthrise using Lunar Reconnaissance Orbiter data

Posted by Andrew Chaikin on 2013/12/20 02:20 CST | 1 comment

If there's one thing I've learned after decades of studying the first human voyages to another world, it's that there is always more to discover about Apollo. Case in point: The Apollo 8 Earthrise photo that became one of the iconic images of the 20th century.

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Chang'e 3 update: 6 instruments active, new fan-produced landing video

Posted by Emily Lakdawalla on 2013/12/17 10:51 CST | 28 comments

Today there was a lengthy press briefing by several members of the Chang'e 3 science team. A complete transcript was posted in Chinese. I have run it through two machine translators and found it to be quite informative, not just about the mission but also about attitudes about Chinese space exploration and foreign cooperation. I also have a cool fan-produced video to share.

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Destination: Europa!

Posted by Steve Vance on 2013/12/16 01:36 CST | 5 comments

It's time to reassess Europa exploration, past, present and future. The Destination Europa! session at AGU, inspired by the eponymous website and movement, didn't take exactly that message as its theme, but it's what I got from the presentations. What an ELECTRIFYING meeting this has been for Europa exploration!

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Amazing Chang'e 3 descent video

Posted by Emily Lakdawalla on 2013/12/15 12:57 CST | 8 comments

Watch and enjoy this full video of Chang'e 3's descent onto the lunar surface.

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Color photo of Yutu rover and Chang'e lander, and more on the Chang'e 3 landing site

Posted by Emily Lakdawalla on 2013/12/15 09:59 CST | 9 comments

Fresh off of Chinese state television are lovely pictures taken by Chang'e 3 lander and rover of each other!

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Six wheels on soil for Yutu!

Posted by Emily Lakdawalla on 2013/12/14 03:28 CST | 9 comments

Here it is! Animated gifs, composed of screen grabs from Chinese state television, of the Yutu rover rolling on to the lunar surface. This was a replay, but it was no less thrilling for that; the actual rollout happened at 20:40 UT (12:40 PT). Six wheels on soil! Woohoo!

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Chang'e 3 has successfully landed on the Moon!

Posted by Emily Lakdawalla on 2013/12/14 08:28 CST | 2 comments

Transmitting images all the way down, China's Chang'e 3 lander successfully arrived on the lunar surface at 13:11:18 -- half an hour before the scheduled landing time. Rover deploy is set for a few hours later.

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Europa: No Longer a "Should," But a "Must"

Posted by Casey Dreier on 2013/12/12 07:51 CST | 10 comments

We've waited long enough, Europa cries out for exploration and discovery. It's time to heed that cry.

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The Plumes of Europa

Posted by Leigh Fletcher on 2013/12/12 12:01 CST | 12 comments

2013 has been a rather exciting year for Europa scientists. Today's exciting news: the Hubble Space Telescope discovery of water vapor plumes from the south pole of this icy moon.

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