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

Shadowland

Seasons, sunlight, and shadow at the Moon's north pole

Terra Cognita

Pushing back the frontier, and filling in the blank spaces on the map.

A Little Moonlight

From far away, or from so near you could almost touch it, the moon is beautiful.

Introducing PlanetFour

The Mars I study is really active; the surface constantly changes. We have collected a lot of image data about changing seasonal features near the south pole. There is so much that we can't analyze all of it on our own. We need your help, through a new Zooniverse project named PlanetFour.

How GRAIL will meet its end

The twin GRAIL spacecraft are nearly out of fuel, and are being directed to a controlled impact near the north pole on the near side of the Moon on December 17. Before the end, though, they did some cool things, including flying within 2000 meters of mountaintops, and catching video of Lunar Reconnaissance Orbiter in flight.

What's up in the Solar System in August 2012

Welcome to the monthly roundup of our solar system's envoy of electronic explorers! All eyes are on Curiosity as it approaches Mars this weekend. Who will lend support at the Red Planet?

3D view of an unnamed lunar crater

Grab your red-blue 3D glasses and dive in to this small but spectacular unnamed lunar crater as seen in a Lunar Reconnaissance Orbiter photo.

New views of Lunokhod 1 and Luna 17 from Lunar Reconnaissance Orbiter

It is always thrilling to see relics of human exploration out there on other worlds. Today, the Lunar Reconnaissance Orbiter Camera team posted some new photos of two defunct spacecraft: the Luna 17 lander and the Lunokhod 1 rover. I've posted images of the two craft before, but the ones released today are much better.

What's up in the solar system in April 2011

April 2011 will see MESSENGER begin the science phase of its orbital mission at Mercury, and should, I think, also see the start of Dawn's approach observations of Vesta. At Mars, Opportunity is back on the road again, rolling inexorably toward Endeavour. At Saturn, Cassini will continue its focus on Saturn and Titan science.

LPSC 2011: Lunar Layers

Some recent high-resolution images from the Lunar Reconnaissance Orbiter Camera (LROC) have revealed large blocks on the lunar surface that show evidence of layers. The layered blocks were seen near the crater Aristarchus, which is a bright crater in the northeast quadrant of the nearside Moon.

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