extremely close encounter with earth. the space rocks, what is it going to do? trace gallagher is monitoring it. >> before we think that that's going to handle it, no worries, the only reason that we know about this? pure luck. a dentist in spain spotted the asteroid on his high powered telescope and he told various space agencies around the world and nasa started following it. 2012 da 14. and 27 miles within the earth in about an hour and like seven minutes, like 2:24 eastern time and this here that you're seeing, this is it. this is from one of the high powered telescopes that nasa has and chartering it through radar like the santa claus coming through christmas. and that's it right there. 17,000 miles away travelling at 17,000 miles per hour. that's about 25 times the speed of sound. and it in space lingo is