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![Ask an Astrobiologist](https://webarchive.library.unt.edu/eot2008/20090812231843im_/http://astrobiology.nasa.gov/img/text/ask-an-astrobiologist.gif)
"Does all life on Earth share a common single-celled ancestor? If so, what is it called? "
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Planetary Science Decadal Survey: White Papers Posted for Comment
Comments are being solicited from members of the astrobiology community on the following paper(s) that will be submitted to the 2009-2011 Planetary Science Decadal Survey. Papers will be revised based on community feedback. Additonal papers will be posted here as they become available.
- Astrobiology Research Priorities for Exoplanets (Last Updated: May 28, 2009)
- Astrobiology Research Priorities for Mercury, Venus, and the Moon (Added: June 8, 2009)
- Astrobiology Research Priorities for Mars (Added: June 10, 2009)
- Astrobiology Research Priorities for the Outer Solar System (Added June 15, 2009)
- Astrobiology Research Priorities for Primitive Asteroids (Added July 22, 2009)
- Limits of Terrestrial Life in Space (Added July 24, 2009)
- An Astrobiological Lens on Planetary System Science (Added July 24, 2009)
- Astrobiology Priorities for Planetary Science Flight Missions (Added July 24, 2009)
Please send comments on the first 5 papers (the last added July 22) to ps_decadal@nx.arc.nasa.gov no later than July 31, 2009. Please send comments on papers posted subsequently to the same address by August 17, 2009.
For more information on the decadal survey, visit: http://www7.nationalacademies.org/ssb/SSEdecadal2011.html
![Recent Articles](https://webarchive.library.unt.edu/eot2008/20090812231843im_/http://astrobiology.nasa.gov/img/text/hd_recent_mb.gif)
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- AbSciCon 2010 First Announcement
- Living in a Dying Solar System, Part 2
- AbGradCon 2009: A Glimpse into Mixed-Reality Meetings of the Future
- Living in a Dying Solar System
- Planetary Science Decadal Survey: White Papers Posted for Comment
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- Escuela International de Astrobiología
- Summer Camp: The Quest for Life
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