Planetary Society's Bill Nye told CNN that Asteroid 2012 DA14 will miss the Earth on February 14 "by about 15 minutes." "15 minutes difference and that's it,"Nye said. "So it's something that we humans all over the world ought to get involved in, this asteroid-hunting. We're the first generation of people that could do something about it. It's exciting science, but it also, I hope, gives everybody a little pause for thought," he added. Nye added that the asteroid is about the same size as the one that caused Arizona's Meteor Crater, and the famed 1908 Tunguska event in Siberia.