Astrobiology Daily News 23 April 2013

- The potential for photosynthesis in hydrothermal vents: a new avenue for life in the Universe?, astro-ph
- Origin Scenarios for the Kepler 36 Planetary System, astro-ph
- Why Does Nature Form Exoplanets Easily?, astro-ph
- N2-associated surface warming on early Mars, astro-ph

- Direct Imaging in the Habitable Zone and the Problem of Orbital Motion, astro-ph
- Planets around stars in young nearby associations radial Velocity searches: a feasibility study, and first results, astro-ph
- Cosmic Explanation for Life's 'Left-Handed' Amino Acids, NAOJ
- Instrument Concepts for Europa Exploration, NASA

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