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![Ask an Astrobiologist](https://webarchive.library.unt.edu/eot2008/20090829225936im_/http://astrobiology.nasa.gov/img/text/ask-an-astrobiologist.gif)
"What is the definition of life? Is it likely that there is life on other planets?"
Now showing: All projects that addressed Astrobiology Roadmap Objective 7.2 from the SETI team
Roadmap Goal 7: Determine how to recognize signatures of life on other worlds and on early Earth
Objective 7.2: Biosignatures to be sought in nearby planetary systems
Expanding the List of Target Stars for Next Generation SETI Searches
Training for Oxygen: Peroxy in Rocks, Early Life and the Evolution of the Atmosphere
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