NASA: Yup, thousand-pound meteorite exploded over Texas

As good time as any for Europe to announce a 2030 asteroid-spotting mission A rock measuring two-feet-wide last week hurtled toward Earth at 27,000 miles per hour – and exploded with an energy equivalent to eight tons of TNT into pieces over McAllen, Texas. (That's 0.6 metres wides and 43,000 km per hour for you metric folks)…