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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

Intro Astronomy Class 1: Tour of the Solar System

Posted by Bruce Betts on 2014/02/11 05:53 CST | 1 comment

Take a tour of the Solar System in the video of class 1 of Bruce Betts' Introduction to Planetary Science and Astronomy class.

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Behind-the-scenes story of Yutu: Promoting space exploration in China

Posted by Quanzhi Ye on 2014/02/11 12:24 CST

Promoting the story of Yutu to the Chinese public through social media: a successful case of science outreach.

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Take My Free Online College Introduction to Planetary Science and Astronomy CSUDH Class

Posted by Bruce Betts on 2014/02/05 05:02 CST | 9 comments

Our own Dr. Bruce Betts is once again teaching his Introduction to Planetary Science and Astronomy college course online. Come join him.

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An extended mission for LADEE

Posted by Emily Lakdawalla on 2014/02/03 09:39 CST | 2 comments

The LADEE team has managed their fuel frugally enough to permit a one-month mission extension; they now plan to impact the Moon on or around April 21, 2014.

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LADEE spotted by Lunar Reconnaissance Orbiter!

Posted by Emily Lakdawalla on 2014/01/29 03:11 CST

Lunar Reconnaissance Orbiter has managed to snap a photo of the other current lunar orbiter, LADEE, at the Moon.

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Bad news for Yutu rover

Posted by Emily Lakdawalla on 2014/01/25 05:33 CST | 8 comments

The Sun has set for a second time at Chang'e 3's landing site on the Moon. The lander is operating normally and shut down to sleep as expected, but the rover is not responding properly to Earth command so could not prepare properly for the oncoming lunar night, and likely will not survive it.

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Russia's Ambitious Planetary Exploration Goals

Posted by Van Kane on 2014/01/22 11:58 CST | 5 comments

Roscosmos has ambitious planetary exploration plans in the coming decades, including a series of solo lunar missions and joint missions to Mars with the European Space Agency.

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New version of panoramic view from Chang'e 3

Posted by Emily Lakdawalla on 2014/01/21 05:02 CST

A higher-resolution version of the Chang'e 3 lander's panoramic view of the lunar surface has appeared on the Web, and artist Don Davis has cleaned it of artifacts to make a beautiful, seamless view. In other news, the mission has been reorganized to accommodate a possibly year-long adventure on the lunar surface.

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Video: Lunar Laser Communication Demonstration sends Bill Nye over the Moon

Posted by Emily Lakdawalla on 2014/01/21 01:23 CST | 1 comment

In this fun video, the Planetary Society worked with LADEE Lunar Laser Communication Demonstration team to communicate live over their lunar link.

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Updates on Chang'e 3: Rover and lander both awake, good science data received

Posted by Emily Lakdawalla on 2014/01/14 05:01 CST | 8 comments

According to news reports from China, the Yutu rover woke up from its two-week nap at 5:09 Beijing time on January 11 (21:09 on January 10, UTC), successfully establishing communication with Earth. The lander woke up autonomously at 8:21 Beijing time / 00:21 UTC on January 12, and is also "in normal condition." UPDATED to note that the lander's camera apparently did not survive lunar night.

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