Between the recent meteorite strike and our close call with 2012 DA14, we've all been thinking an awful lot about potential impact hazards from the heavens. Thankfully, however, during our visit to NASA Ames last week, much of our fear was put to rest by astrobiologist Dr. David Morrison, the scientist who coined the word "cosmophobia" to describe the fear of external impacts on Earth. Morrison, who recently served as one of the go to sources for
