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Curiosity Mars rover snaps a selfie

The Curiosity Mars rover used a camera on the end of its robot arm to take a selfie on the slopes of Mount Sharp before moving on to begin exploring nearby clay-rich soils. The rover is slowly working its way up the lower slopes of the mountain, looking for changes that might indicate the transition from warmer, wetter eras to the dry, frigid environment seen today.

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An interview with David Grinspoon

As part of the new Gravity Assist podcast, NASA’s Director of Planetary Science Jim Green interviewed David Grinspoon of the Planetary Science Institute in Arizona about the planet Venus and what makes the second world from the Sun so hellish compared to Earth.