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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

Mapping Europa

Posted by Björn Jónsson on 2015/02/18 01:38 CST | 2 comments

Several global maps have been made of Europa, but amateur image processor Björn Jónsson felt they could be improved—so he decided to make a new one.

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Mars Orbiter Mission images Mars' moons, including the far side of Deimos

Posted by Emily Lakdawalla on 2015/02/04 10:02 CST | 2 comments

Today I'm excited to show you some previously unreleased images from Mars Orbiter Mission, containing Mars' moons Phobos and Deimos.

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

Posted by Bruce Betts on 2015/02/04 05:00 CST

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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It's Official: We're On the Way to Europa

Posted by Casey Dreier on 2015/02/02 08:55 CST | 7 comments

NASA's 2016 budget request increases the space agency's budget by $519 million, starts a new mission to Europa, increases funds to Commercial Crew, and threatens some long-running planetary missions.

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Flawed Beauties

Posted by Bill Dunford on 2015/02/02 05:03 CST | 1 comment

More examples of imperfect--but tantalizing--images from deep space.

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Fountains of Water Vapor and Ice

Posted by Deepak Dhingra on 2015/01/22 11:22 CST | 2 comments

Deepak Dhingra shares some of the latest research on Enceladus' geysers presented at the American Geophysical Union (AGU) Fall Meeting in San Francisco last month.

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The Moon, In Depth

Posted by Bill Dunford on 2015/01/20 03:56 CST | 3 comments

Explore a new collection of 3D lunar landscapes.

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Ten years after the Huygens landing: The story of its images

Posted by Emily Lakdawalla on 2015/01/15 03:02 CST | 5 comments

The landing of Huygens on Titan was a significant moment for planetary science and a great accomplishment for Europe. But the Huygens landing also stimulated the development of the international community of amateur image processors that does such great work with space images today. I was in the midst of it all at the European Space Operations Centre in Darmstadt.

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JUICE at Europa

Posted by Van Kane on 2015/01/13 02:03 CST | 7 comments

Europe's JUICE spacecraft will provide us with a detailed regional study of this icy moon of Jupiter.

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Riding With Cassini Through 2014

Posted by Bill Dunford on 2014/12/31 06:13 CST | 1 comment

Video: see some of the sights Cassini saw this year.

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