Big Astroid News Today

Hurdling toward earth several times actually. but say it happens in real life and bruce willis isnt available to help prevent armageddon? well, nasa wondered if an astroid could be blasted into changing its course. and this week the space agency launched a first of its kind mission to test the theory. cnns kristin fisher has the details. >> three, two, one, and liftoff of the falcon 9 and d.a.r.t. >> reporter: the launch of nasas first ever planetary defense mission, instead of carrying satellit...

500 miles away -- >> well, in february, february 15, we all remember that amazing footage of dash cams -- >> yes, i remember that. >> that same day was already people were on the look-out because we were watching for this big astroid, about three times as big. >> scared me there. >> about 50 meter diameter astroid. we had seen it a year ago. and it came within 17,000 miles. thats inside the orbit of our satellites. so we are getting into sandra bullock and clooney territory here, with "gravity."...