Astrobiology News 19 July 2013

- Snow in an Infant Planetary System, ESO
- Reports Detail Mars Rover Clues to Atmosphere's Past, NASA
- Galactic cosmic ray induced radiation dose on terrestrial exoplanets, astro-ph

- Searching for Mars' Missing Atmosphere, NASA
- Rotational Synchronization May Enhance Habitability for Circumbinary Planets: Kepler Binary Case Studies, astro-ph
- Viscous Evolution and Photoevaporation of Circumstellar Disks due to External FUV Radiation Fields, astro-ph
- Evidence for periodicities in the extinction record? Response to Melott & Bambach, astro-ph
- Kepler spacecraft should pin down 'alien Earth' planets despite glitch, MSNBC

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