Could a Comet Hit Mars in 2014? 0 Randall Gross ScienceMarch 2013Monday, March 4, 2013 at 4:49 am PST • Views: 1,056 More: Could a Comet Hit Mars in 2014? Cosmic Crosshairs Cometary Impacts Cometary Nuclei Comet Hit Mars Earth Preliminary Orbital Prediction Uncomfortably-Close Planetary Fl Oort Cloud