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Stories, updates, insights, and original analysis from The Planetary Society.

Explorer of Enceladus and Titan

For the third time in less than a decade, scientists have proposed a multiple-flyby mission to explore the habitability of Saturn’s ocean moons Titan and Enceladus.

The what-o-sphere? An explainer

Why do we need to slice up atmospheres into classifications like the troposphere, stratosphere, mesosphere, and thermosphere?

Clouds and haze and dust, oh my!

What types of aerosols do we find in the atmospheres around the Solar System, and why does what we call them—clouds vs. haze vs. dust—matter? Sarah Hörst explains.

Looking back at Pluto

I don't think anyone was prepared for the beauty -- or the instant scientific discoveries -- in this

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

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.

Cassini's awesomeness fully funded through mission's dramatic end in 2017

Last year, rumors swirled that NASA may be so pinched for dollars that the agency might end the Cassini mission early. Today, Cassini received the welcome news that it has formally been funded through the planned end of its extended-extended mission in 2017. A huge congratulations to the Cassini mission!

Discovery Missions for an Icy Moon with Active Plumes

In December, scientists announced the discovery of possible plumes of water being ejected from Jupiters’s moon Europa. If confirmed, Europa would be the second moon with confirmed plumes after Saturn’s moon Enceladus. Two Discovery mission proposals for Enceladus suggest the types of missions that may be proposed for Europa.

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