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Astrobiology

(study of extra-terrestrial life)

Astrobiology is the study of life off of Earth. None has been found so it is a bit speculative. The study includes:

Reasoning out the conditions that might support life is of interest as is the reasoning out the possible signs, i.e., Biosignatures. Life is thought to be most likely on a Planet when Carbon is present, which is the Element most likely to be the basis of very large, complex molecules, and when liquid water, a very effective solvent, is present.


(exoplanets,life,biology,science)
http://en.wikipedia.org/wiki/Astrobiology

Referenced by:
CAESAR
Carbonate-silicate Cycle
Mass Extinction
NASA Astrobiology Institute (NAI)

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