Planetary Society Blog

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NASA announces five Discovery proposals selected for further study

Posted: 30 Sep 2015 01:39 PM PDT
http://www.planetary.org/blogs/casey...ownselect.html

NASA announced the first-round selections for its next Discovery mission
today. A total of five planetary mission concepts -- three targeted at
asteroids, two at Venus -- will move to the next stage of the competition.

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The solar system at 1 kilometer per pixel: Can you identify these worlds?
The answers

Posted: 30 Sep 2015 08:00 AM PDT
http://www.planetary.org/blogs/emily...m-at-1-km.html

Last Friday I posted an image containing 18 samples of terrain, all shown
at the same scale. Were you able to figure out which square was which? Here
are the answers.