NASA has now confirmed a meteor was travelling at 75,000 miles per hour (more than 120,000 km/h) at an altitude of 40 miles when it broke apart on Saturday May 30 NASA has now confirmed a meteor was travelling at 75,000 miles per hour (more than 120,000 km/h) at an altitude of 40 miles when it broke apart on Saturday May 30 A meteor crashing toward Earth exploded over the north-eastern United States on Saturda... [1777 chars]