NASA says the meteor that exploded over northeast Ohio yesterday was actually a small asteroid that weighed about seven tons. Videos of the asteroid show a huge fireball streaking across the morning sky as it broke up over Medina County, causing a sonic boom that could be heard as far away as Pennsylvania and New York. NASA says the asteroid was traveling about 45-thousand miles-per-hour before it started splitting up. It scattered fragments across southern Medina County, and nearby residents are now scouring the area for pieces of the asteroid.