http://www.popsci.com/science/article/2010-11/tasty-sounding-nasa-mission-will-help-astrobiologists-study-lifes-origins
NASA's O/OREOS nano satellite has recently been launched. Its objective is to study bateria and outer space's effect on them. It might shed some clues as to whether bacteria could survive long enough to ride an asteroid to earth, providing an explanation for the appearance of life on earth.
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