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Researchers based at Princeton University, the University of Arizona and the Centro de Astrobiología in Spain used a low-velocity process called weak transfer to provide the strongest support yet for “lithopanspermia,” the idea that the microorganisms that sprout life came to Earth — or spread from Earth to other developing planets — via collisions with meteorite-like planetary fragments. Under weak transfer, a slow-moving planetary fragment meanders into the outer edge of the gravitational pull, or weak stability boundary, of a planetary system.
2012-09-26 08:21:58
Source: http://luismmx.blogspot.com/2012/09/slow-moving-rocks-better-odds-that-life.html