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

MESSENGER: A snapshot of home

MESSENGER is in a unique position in the solar system, orbiting the Sun well within the orbit of Venus. From there, it can gaze outward from the Sun to search for tiny objects that may possibly be traveling in the same region, called vulcanoids.

New crater found in LROC image from the Moon

This news is no surprise, but I think it's the first such discovery I've heard of: the Lunar Reconnaissance Orbiter Camera (LROC) team has identified a new crater on the Moon, one that wasn't there when Apollo 15 flew over.

Volcanism across the solar system: Io

Three months ago, grandiosely, I announced that I was going to survey volcanism across the solar system, and I began the journey on Earth. Then I failed to follow up.

A bull's eye on the Moon

Orientale is the youngest large impact basin on the Moon, which means that very little of it has been obliterated by later impacts.

Using Earth to Study the Moon

Exploring Earth analogues of space landscapes is a valuable activity that can help planetary scientists correctly interpret what their instruments are telling them.

Sighting the homeworld

Coming closer every day, Mr. Hayabusa has sighted his final destination: his homeworld, Earth, and its attendant Moon.

Moon Zoo is ready for you

I'm delighted to point you to a citizen science project for wannabe space geologists like me: Moon Zoo.

APOLLO program pinpoints location of Lunokhod 1 retroreflector

With the recent Lunar Reconnaissance Orbiter imaging of the Lunokhod 1 rover, scientists on the APOLLO project were finally able to do something that scientists have been dreaming of for more than three decades: shoot the rover with a laser.

Hubble turns 20

Tomorrow is the 20th anniversary of the launch of the Hubble Space Telescope. It's hard to believe it's been going strong for so many years.

Water on the Moon: Direct evidence from Chandrayaan-1's Moon Impact Probe

I've reported before about the detection of water on the surface of the Moon by the Chandrayaan-1 orbiter and the Deep Impact and Cassini spacecraft, but what I'm about to tell you about is actually more exciting: the direct detection of water in the lunar atmosphere by the Chandrayaan-1 Moon Impact Probe.

What planet is THIS?

Check out this watery world! It's clearly a computer simulation of something, but of what? Can you guess?

And now for Luna 17 and Lunokhod 1

I am delighted to report that within a day of the first view of Luna 21 and Lunokhod 2 since the end of that mission in 1973, the sister mission, Luna 17 and Lunokhod 1, has also been found.

Lunokhod found on the Moon -- and on Earth, too

Yesterday I posted a bit of a Lunar Reconnaissance Orbiter camera image showing the tracks of the Russian Lunokhod 2 rover. Today, I can post for you an image showing the rover's final resting place

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