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

Rocky worlds rock

This week we're all about the rocky planets: Mercury, Venus, Earth and Mars.

Google+ Hangout with ESA about Europe's Mars exploration

The European Space Agency invited me to join Mars Express project scientist Olivier Witasse, and spacecraft oeprations manager Michel Denis for a Hangout on Europe's recent and future exploration of Mars and Phobos.