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

Europa: How Less Can Be More

Van Kane explains three factors that make exploring Europa hard—factors that can make a mission concept that seems like less actually be more.

What are Mercury's hollows?

I've been fascinated by Mercury's hollows ever since MESSENGER discovered them. Two recent papers look at where they are found to try to figure out how they form.

The Mercury Transit You Probably Missed

Planetary transits of the Sun by Mercury and Venus don't come along very often, and when they do we make a big deal of it because, well, it's really cool!

Terra Cognita

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

Return of the Pale Blue Dot

You can be part of a planetwide group photo as Cassini and MESSENGER turn their cameras Earthward on July 19.

LPSC 2013: Seeing in Permanent Shadow

The case for water ice hidden in permanently shadowed regions at the north pole of the planet Mercury received another boost recently. On Wednesday March 20, 2013 at the Lunar and Planetary Science Conference, Nancy Chabot presented the very first visible-light images of what is in the shadows of these polar craters.

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